Electron configuration for tin

Electronic configuration of Rubidium: The atomic symbol of Rubidium is Rb. The atomic number of Rubidium is 37 and it is a part of the alkali metal family. As the atomic number is equal to the number of electrons present in a neutral element. So, the number of electrons are 37.

Electron configuration for tin. The electron configuration of tin is [ Kr] 4d 10 5s 2 5p 2 , if the electron arrangement is through orbitals. Electron configuration can be done in two ways. Electron configuration through orbit (Bohr principle) Electron configuration through orbital (Aufbau principle) Tin atom electron configuration (Bohr model)

Ground State Electronic Configuration of Tin - neutral Tin atomAbbreviated electronic configuration of . TinThe ground state abbreviated electronic configuration of Neutral . Tin atom is [Kr] 4d10 5s2 5p2. The portion of Tin configuration that is equivalent to the noble gas of the preceding period, is abbreviated as [Kr]. For atoms with many ...

The electron arrangement of an atom can be predicted from its atomic number. For example, the atomic number of sodium is 11. Sodium atoms have 11 protons close proton Subatomic particle with a ...If you're a beginning electronic hobbyist looking for an inexpensive project or just want to have a solar-powered radio to throw in your zombie apocalypse kit you'll have fun making this emergency radio using cheap solar garden lights, an F...A vertical column in the periodic table. Members of a group typically have similar properties and electron configurations in their outer shell. Period A horizontal row in the periodic table. The atomic number of each element increases by one, reading from left to right. Block In the fluorine ground-state electron configuration, the five electrons of the 3p orbital are located in the p x, p y, and p z orbitals. Then correct electron configuration of fluorine in the ground state will be 1s 2 2s 2 2p x 2 2p y 2 2p z 1. This electron configuration shows that the last shell of the fluorine atom has an unpaired electron ...The electron configuration of bromine is 1s2 2s2p6 3s2p6d10 4s2p5, which can be shortened to [Ar] 4s2 3d10 4p5. The electron configuration indicates that bromine has a total of 35 electrons.The zinc atom donates two electrons in the 4s orbital to form a zinc ion (Zn 2+ ). Zn – 2e – → Zn 2+. Here, the electron configuration of zinc ion (Zn 2+) is 1s 2 2s 2 2p 6 3s 2 3p 6 3d 10. Zinc atom exhibit +2 oxidation …

Based on the order of fill above, these 8 electrons would fill in the following order 1s, 2s and then 2p. So Oxygen's electron configuration would be O 1s 2 2s 2 2p 4. Special Cases. Configurations of ions present a special case of electron configuration and also demonstrate the reason for the formation of those ions in the first place. In the case of first row transition metals, the electron configuration would simply be [Ar] 4s x 3d x. The energy level, "n", can be determined based on the periodic table, simply by looking at the row number in which the element is in. However, there is an exception for the d-block and f-block, in which the energy level, "n" for the d block is ...These electrons are arranged according to specific rules in different orbitals. The arrangement of electrons in gold in specific rules in different orbits and orbitals is called the electron configuration of gold. The electron configuration of gold is [ Xe] 4f 14 5d 10 6s 1 , if the electron arrangement is through orbitals.It is stable below 13.2 °C (55.8 °F) and is brittle. α-tin has a diamond cubic crystal structure, as do diamond and silicon. α-tin does not have metallic properties because its atoms form a covalent structure in which electrons cannot move freely. α-tin is a dull-gray powdery material with no common uses other than specialized semiconductor appl... The Aufbau principle states that electrons are allocated to atomic orbitals in order of increasing energetic content. To calculate the order of energy we use the Madelung rule: a) In H atoms, all subshells of same n have the same energy. b) in atoms of 2+ electrons, subshells increase in energy as the value of n+l increases, and for subshells ... This electron configuration calculator will instantly show you the distribution of electrons in the orbitals of any periodic element you choose. Typically, you need at least 8 steps to determine the electron configuration, starting with finding the atomic number by looking at the list of orbitals and understanding the notation.. But wait — you can avoid …

Tellurium electron configuration. ← Electronic configurations of elements . Te (Tellurium) is an element with position number 52 in the periodic table. Located in the V period. Melting point: 449.6 ℃. Density: 6.25 g/cm 3. Electronic configuration of the Tellurium atom in ascending order of orbital energies: 1s 2 2s 2 2p 6 3s 2 3p 6 4s 2 3d 10 4p 6 5s 2 4d 10 …PROBLEM 3.1.12 3.1. 12. In one area of Australia, the cattle did not thrive despite the presence of suitable forage. An investigation showed the cause to be the absence of sufficient cobalt in the soil. Cobalt forms cations in two oxidation states, Co 2+ and Co 3+. Write the electron structure of the two cations. Answer. According to the atomic number of hydrogen, it has only one electron in its 1s orbital. The electronic configuration of H 2 molecule is given as: H 2: (σ1s) 2 Bond order = (number of electrons in bonding MOT – number of electrons in antibonding MOT)/2 Bond order= (2-0)/2. Bond order = 1.The chemistry of gallium is dominated by the resulting Ga 3 + ion, with its [Ar]3d 10 electron configuration. This and similar electron configurations are particularly stable and are often encountered in the heavier p-block elements. They are sometimes referred to as pseudo noble gas configurations. In fact, for elements that exhibit these ...A vertical column in the periodic table. Members of a group typically have similar properties and electron configurations in their outer shell. Period A horizontal row in the periodic table. The atomic number of each element increases by one, reading from left to right. Block

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Electron configuration The arrangements of electrons above the last (closed shell) noble gas. Melting point The temperature at which the solid–liquid phase change occurs. ... but also as tin and lead. Germanium itself is classified as a metalloid. It's hard at room temperature and looks metallic with a shiny silvery grey finish, ...Question: Use the periodic table to determine the electron configuration for tin Express your answer in condensed form, in the order of orbital filling. For example, [He] 2s22p2 would be entered as [He]2s 22p∧2. electron coniguration of tin = * Incorrect; Try Again; 3 attempts remaining Part B Enter an electron configuration for iodine based on its position in theHow to draw an electron configuration diagram. Find the element on the periodic table. The atomic number tells you how many electrons to draw in total. For example, potassium has 19 electrons. Draw a small circle and write the symbol in the centre. This represents the nucleus.Electron configuration. 1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 5s2 5p2. Density [g/cm3]. 7.29. State. Solid. Melting point [°C]. 231.97. Boiling point [°C]. 2270.

Chemistry. Chemistry questions and answers. Using the building-up principle, find the complete ground-state electron configuration of the tin (Sn) atom, . (Express your answer as a series of orbitals. For example, the electron configuration of Li would be entered in complete form as 1s22s1.) One of the following electronic configurations is ...The easiest way to create electron configurations is using an electron configuration table, which is a way of writing down the various orbitals available to electrons. This table is easy to remember, and it makes it possible to generate the electron configuration table for any given element. It looks something like this. The electron configuration of an element with an atomic number greater than 18 cannot be properly determined according to the Bohr atomic model. The electron configuration of all the elements can be done through the orbital diagram. Electron configuration of krypton through orbital. Atomic energy shells are subdivided into sub-energy levels. By Hund’s rule, the electron configuration of carbon, which is 1 s2 2 s2 2 p2, is understood to correspond to the orbital diagram shown in c. Experimentally, it is found that the ground state of a neutral carbon atom does indeed contain two unpaired electrons. Exercise 2.2.1. Draw an orbital diagram for nitrogen, Z = 7.Electronic configuration of Zinc ion Zn 2 +: Zn loses its two electrons and results in the formation of Zn 2 + ion. The electronic configuration of the Zinc ion is 1 s 2 2 s 2 2 p 6 3 s 2 3 p 6 3 d 10. Suggest Corrections. 5.Question: Use the periodic table to determine the electron configuration for tin Express your answer in condensed form, in the order of orbital filling. For example, [He] 2s22p2 would be entered as [He]2s 22p∧2. electron coniguration of tin = * Incorrect; Try Again; 3 attempts remaining Part B Enter an electron configuration for iodine based on its position in the The strontium atom donates two electrons of the last shell to form bonds and turns into a strontium ion (Sr 2+ ). That is, strontium is a cation element. Sr – 2e – → Sr 2+. The electron configuration of strontium ion (Sr 2+) is 1s 2 2s 2 2p 6 3s 2 3p 6 3d 10 4s 2 4p 6.The zinc atom donates two electrons in the 4s orbital to form a zinc ion (Zn 2+ ). Zn – 2e – → Zn 2+. Here, the electron configuration of zinc ion (Zn 2+) is 1s 2 2s 2 2p 6 3s 2 3p 6 3d 10. Zinc atom exhibit +2 oxidation …For the remaining 14 electrons, the electron configuration is: 4 d 10 5 s 2 5 p 2 4d^{10}5s^25p^2 4d105s25p2 Hence, the electron configuration of tin is: [ K ...The electron configuration of an element is the arrangement of its electrons in its atomic orbitals. By knowing the electron configuration of an element, we can predict and explain a great deal of its chemistry. Example 1.3.1. Draw an orbital diagram and use it to derive the electron configuration of phosphorus, Z = 15.

The Electron: Crash Course Chemistry #5. Video 2.6.2 2.6. 2: An overview of the role of orbitals in electron configurations and how to write electron configurations. The relative energy of the subshells determine the order in which atomic orbitals are filled (1 s, 2 s, 2 p, 3 s, 3 p, 4 s, 3 d, 4 p, and so on).

Tin Properties and Electron Configuration-Vector illustration Stock Vector ... Sn Tin, Periodic Table of the Elements, Shell Structure of Tin Stock Vector. Modern ...The electron configuration of tin is 1s 2 2s 2 2p 6 3s 2 3p 6 4s 2 3d 10 4p 6 5s 2 4d 10 5p 2. Learn how to find: Tin electron configuration Now in the next step, start drawing the orbital diagram for tin.Electronic configuration of Tin:-. Atomic number of Tin is 50, that is Tin has a total of 50 electrons. Since 1s orbital can hold a maximum of 2 electrons, so first 2 electrons will fill the 1s orbital, and the next 2 electrons will fill the 2s orbital. The next six electrons of Tin will go in the 2p orbital, as the p orbital can hold up to six ...Electron configuration for Tin (element 50). Orbital diagram. Sn (Tin) is an element with position number in the periodic table. Located in the : 232 ℃. Electronic configuration of the Tin atom in ascending order of orbital energies: 2020-2023 Your online. Electronic configuration of the Tin atom. Valence electrons. Electron Configuration Exceptions. The periodic table can be a powerful tool in predicting the electron configuration of an element. However, we do find exceptions to the order of filling of orbitals shown in Figure 3 and …Electronic configuration of Tin:-. Atomic number of Tin is 50, that is Tin has a total of 50 electrons. Since 1s orbital can hold a maximum of 2 electrons, so first 2 electrons will fill the 1s orbital, and the next 2 electrons will fill the 2s orbital. The next six electrons of Tin will go in the 2p orbital, as the p orbital can hold up to six ...Tin (Sn). Diagram of the nuclear composition and electron configuration of an atom of tin-120 (atomic number: 50), the most common isotope of this element. The nucleus consists of 50 protons (red) and 70 neutrons (blue). 50 electrons (green) bind to the nucleus, successively occupying available electron shells (rings). Since tin is the most tonally resonant of all metals it is used in bell metals and to make organ pipes, which are generally a mix of 50:50 tin and lead. The proportion of tin generally determines the pipe's tone. And so we return to the humble tin can. Although not made from tin, cans are often coated with tin on the inside to prevent corrosion.The tin orbital notation is a shorthand system designed to represent the exact positions of the electrons in the tin atom. This is similar to electron configuration, but numbers are used instead of boxes to represent the positions of the electrons. This orbital notation system always follows the Aufbau principle. The electron configuration of this titanium ion (Ti 3+) is 1s 2 2s 2 2p 6 3s 2 3p 6 3d 1. The titanium atom donates two electrons in 4s orbital and two electrons in 3d orbital to convert to titanium ion (Ti 4+ ). Ti – 4e – → Ti 4+. The electron configuration of this titanium ion (Ti 4+) is 1s 2 2s 2 2p 6 3s 2 3p 6.

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In writing the electron configuration for beryllium the first two electrons will go in the 1s orbital. Since 1s can only hold two electrons the remaining 2 electrons for Be go in the 2s orbital. Therefore the Be electron configuration will be 1s 2 2s 2. Video: Beryllium Electron Configuration Notation The configuration notation provides an easy way for scientists …Electron Configuration and Oxidation States of Tin. Electron configuration of Tin is [Kr] 4d10 5s2 5p2. Possible oxidation states are +2,4. Electron Configuration. The periodic table is a tabular display of the chemical elements organized on the basis of their atomic numbers, electron configurations, and chemical properties.The electron configuration for selenium is 1s22s22p63s23p64s23d104p4. This configuration is also written as [Ar] 4s23d104p4, according to Dr. Anne Marie Helmenstine, a contributor to About.com.Co – 2e – → Co 2+. Here, the electron configuration of cobalt ion (Co 2+) is 1s 2 2s 2 2p 6 3s 2 3p 6 3d 7. The cobalt atom donates two electrons in the 4s orbital and an electron in the 3d orbital to convert a cobalt ion (Co 3+ ). Atomic number, atomic weight and charge of cobalt ion. Co – 3e – → Co 3+.Jul 3, 2020 · To write the configuration for the Tin (Sn) and the Tin ions, first we need to write the electron configuration for just Tin (Sn). We first need to find the... The easiest way to create electron configurations is using an electron configuration table, which is a way of writing down the various orbitals available to electrons. This table is easy to remember, and it makes it possible to generate the electron configuration table for any given element. It looks something like this. That is, magnesium is a cation element. Mg – 2e – → Mg 2+. The electron configuration of magnesium ion (Mg +2) is 1s 2 2s 2 2p 6. This electron configuration shows that magnesium ion (Mg +2) has acquired the electron configuration of neon and it achieves an octave full stable electron configuration.Begin each element by writing out the electronic configuration in terms of s,p,d,f orbitals. From this you can directly get n and find l based on its equivalent orbital. From l you can figure the range of m_l, and then count one up in the sequence for each electron in the outermost subshell. m_s is either -1/2 or +1/2.Examples and explanation on how to write electron configurations using the electron configuration chart. A step-by-step description of how to write the el...According to the atomic number of hydrogen, it has only one electron in its 1s orbital. The electronic configuration of H 2 molecule is given as: H 2: (σ1s) 2 Bond order = (number of electrons in bonding MOT – number of electrons in antibonding MOT)/2 Bond order= (2-0)/2. Bond order = 1. ….

A vertical column in the periodic table. Members of a group typically have similar properties and electron configurations in their outer shell. Period A horizontal row in the periodic table. The atomic number of each element increases by one, reading from left to right. BlockSelenium consists of 34 electrons distribution in its 4 orbits. So electronic configuration of selenium define as: 1s 2 2s 2 2p 6 3s 2 3p 6 3d 10 4s 2 3d10 4p 4. Or. The electronic configuration can also be represented with the help of a full electron distribution element that is Argon/ Ar. In this case it is written as [Ar] 3d 10 4s 2 4p 4.Study with Quizlet and memorize flashcards containing terms like The noble-gas notation for tin (Sn) will contain the symbol, Which of the following elements has the fewest valence electrons?, Arsenic does not have any valence electrons in the 3d orbital because and more.Write the complete ground-state electron configuration of the tin atom, Sn, using the building-up principle. Step-by-step solution. Step 1 of 3. 773-8-70GP SA: 5350. SR: 9877. The building up principle use to reproduce the electron configuration of the ground state atoms by successively filling subshells with electrons in specific order.31 ago 2023 ... Catenation is also exhibited to a high degree by elemental silicon, germanium, and tin, but it is strictly limited in compounds of these ...For tin, #Z=50#..... And thus 50 electrons must be distributed according to the usual #"aufbau"# scheme.....Tin lies in Group 14, and thus should have a similar electronic configuration to carbon. Can you demonstrate the similarity.Compound properties. Element reactions. List all Sn properties. Tin atoms have 50 electrons and the shell structure is 2.8.18.18.4. The ground state electron configuration of ground state gaseous neutral tin is [ Kr ]. 4d10. 5s2. 5p2 and the term symbol is 3P0.In this case, 2+2+6+2+6+2+10+6+2+1= 39 and Z=39, so the answer is correct. A slightly more complicated example is the electron configuration of bismuth (symbolized Bi, with Z = 83). The periodic table gives the following electron configuration: 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p65s2 4d10 5p6 6s2 4f14 5d10 6p3.A vertical column in the periodic table. Members of a group typically have similar properties and electron configurations in their outer shell. Period A horizontal row in the periodic table. The atomic number of each element increases by one, reading from left to right. Block Electron configuration for tin, Here, as the electron of tin reaches and fulfil the vacant orbitals it would be filling the orbital as following according to the Aufbau principle i.e. 1s, 2s,2p,3s,3p,4s,3d,4p,5s,4d and 5p orbitals. Tin lies in the group-14 of the periodic table, so it’s electronic configuration will be similar to the carbon., These electrons are arranged according to specific rules in different orbitals. The arrangement of electrons in gold in specific rules in different orbits and orbitals is called the electron configuration of gold. The electron configuration of gold is [ Xe] 4f 14 5d 10 6s 1 , if the electron arrangement is through orbitals., The rubidium atom donates an electron of the last shell to form bonds and turns into a rubidium ion (Rb + ). That is, rubidium is a cation element. Rb – e – → Rb +. The electron configuration of rubidium ion (Rb +) is 1s 2 2s 2 2p 6 3s 2 3p 6 3d 10 4s 2 4p 6., 4K views 1 year ago. To find the number of valence electrons for Tin (Sn) we need to look at its electron configuration. This is necessary because Sn is a transition metal (d block element) and we ..., Chemical element, Tin, information from authoritative sources. Look up properties, history, uses, and more. ... 2.2 Electron Configuration [Kr]5s 2 4d 10 5p 2. Los ... , Tin Full electron configuration of tin: 1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 5s2 5p2 indium ← tin → antimony, An electron configuration is a method of indicating the arrangement of electrons about a nucleus. A typical electron configuration consists of numbers, letters, and superscripts with the following format: 1. A number indicates the energy level (The number is called the principal quantum number.). 2. A letter indicates the type of orbital; s, p ..., Example: 1s 2 For writing ground state electron configurations, a few main steps should be followed. Find the amount of electrons in the atom. Example: Na: 11 e - Na +: 10 e -. Fill orbitals following the model until all electrons have been accounted for. Example: Na: 11 e - 1s 2 2s 2 2p 6 3s 1 or Na +: 1s 2 2s 2 2p 6., The easiest way to create electron configurations is using an electron configuration table, which is a way of writing down the various orbitals available to electrons. This table is easy to remember, and it makes it possible to generate the electron configuration table for any given element. It looks something like this., 11 ago 2023 ... Tin has 4 valence electrons. Because of this, Tin needs to lose the 4 electrons to make it stable. Thus the answer is SN4+., 11 ago 2023 ... And the electron configuration of Tin is 1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 5s2 5p2. This electron arrangement and electron configuration ..., Re: Electron configuration for tin (IV) ion. Postby Lily Lee 3C » Wed Nov 04, 2015 6:42 am. Tin can have multiple oxidation states. The IV signifies that you are dealing with a Tin 4+ ion. Tin: [Kr] 4d^10 5s^2 5p^2. Tin (IV): [Kr] 4d^10 because the 4 electrons are taken away from the highest energy orbitals first. Top., They are helium, neon, argon, krypton, xenon, and radon. A noble gas configuration of an atom consists of the elemental symbol of the last noble gas prior to that atom, followed by the configuration of the remaining electrons. So for sodium, we make the substitution of [ Ne] for the 1 s 2 2 s 2 2 p 6 part of the configuration. , Chemical element, Tin, information from authoritative sources. Look up properties, history, uses, and more. ... 2.2 Electron Configuration [Kr]5s 2 4d 10 5p 2. Los ... , Exercises. Write the electron configuration for phosphorus and draw the orbital diagram. Solution: The electron configuration for phosphorus is 1s 2 2s 2 2p6 3 s2 3p3 and the orbital diagram is drawn below. The electron configuration of an atom indicates the number of valence electrons. Valence electrons determine the unique chemistry of each ..., The easiest way to create electron configurations is using an electron configuration table, which is a way of writing down the various orbitals available to electrons. This table is easy to remember, and it makes it possible to generate the electron configuration table for any given element. It looks something like this. , The electron configuration of an element is the arrangement of its electrons in its atomic orbitals. By knowing the electron configuration of an element, we can predict and explain a great deal of its chemistry. Example 1.3.1. Draw an orbital diagram and use it to derive the electron configuration of phosphorus, Z = 15., Chemical element, Tin, information from authoritative sources. Look up properties, history, uses, and more. ... 2.2 Electron Configuration [Kr]5s 2 4d 10 5p 2. Los ..., The easiest way to create electron configurations is using an electron configuration table, which is a way of writing down the various orbitals available to electrons. This table is easy to remember, and it makes it possible to generate the electron configuration table for any given element. It looks something like this. , Electron configuration of Tin is [Kr] 4d10 5s2 5p2. Possible oxidation states are +2,4. Density of Tin Density of Tin is 7.31g/cm3. Typical densities of various substances are at atmospheric pressure., Re: Electron configuration for tin (IV) ion. Postby Lily Lee 3C » Wed Nov 04, 2015 6:42 am. Tin can have multiple oxidation states. The IV signifies that you are dealing with a Tin 4+ ion. Tin: [Kr] 4d^10 5s^2 5p^2. Tin (IV): [Kr] 4d^10 because the 4 electrons are taken away from the highest energy orbitals first. Top., The electron configuration of bromide ion(Br –) is 1s 2 2s 2 2p 6 3s 2 3p 6 3d 10 4s 2 4p 6. The electron configuration of bromide ion(Br –) shows that the bromide ion acquired the electron configuration of krypton. Bromine atom exhibit -1, +1, +3, +5 oxidation states. The oxidation state of the element changes depending on the bond formation., Step-1: Determining the total number of electrons in tin. The elements in the periodic table are arranged according to their atomic number. Since rhodium is the 50th element of the periodic table, the atomic number of tin is 50. We must always remember that the atomic number and the number of protons of an element are equal., Study with Quizlet and memorize flashcards containing terms like Listed below is an incorrect electron configuration for calcium. Identify what is wrong in the electron configuration. Ca = 1s11s22s22p63s23p64s2, How many d electrons are found in cobalt?, How many valence electrons are present in sulfur? and more., The electronic configuration of tin is: [Kr]D10.5s2.5p2.The electronic configuration of chromium(2+) is correct. What is tin as a stable electron configuration? Tin has 4 valence electrons., A step-by-step description of how to write the electron configuration for elements using just the Periodic Table.In order to write the electron configuration..., Co – 2e – → Co 2+. Here, the electron configuration of cobalt ion (Co 2+) is 1s 2 2s 2 2p 6 3s 2 3p 6 3d 7. The cobalt atom donates two electrons in the 4s orbital and an electron in the 3d orbital to convert a cobalt ion (Co 3+ ). Atomic number, atomic weight and charge of cobalt ion. Co – 3e – → Co 3+., The electron configuration of tin is 1s 2 2s 2 2p 6 3s 2 3p 6 4s 2 3d 10 4p 6 5s 2 4d 10 5p 2. Learn how to find: Tin electron configuration Now in the next step, start drawing the orbital diagram for tin., Nov 13, 2020 · Electron Configuration and Oxidation States of Tin. Electron configuration of Tin is [Kr] 4d10 5s2 5p2. Possible oxidation states are +2,4. Electron Configuration. The periodic table is a tabular display of the chemical elements organized on the basis of their atomic numbers, electron configurations, and chemical properties. , The electron configuration for selenium is 1s22s22p63s23p64s23d104p4. This configuration is also written as [Ar] 4s23d104p4, according to Dr. Anne Marie Helmenstine, a contributor to About.com., In this case, 2+2+6+2+6+2+10+6+2+1= 39 and Z=39, so the answer is correct. A slightly more complicated example is the electron configuration of bismuth (symbolized Bi, with Z = 83). The periodic table gives the following electron configuration: 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p65s2 4d10 5p6 6s2 4f14 5d10 6p3., The electron configuration of an element with an atomic number greater than 18 cannot be properly determined according to the Bohr atomic model. The electron configuration of all the elements can be done through the orbital diagram. Electron configuration of krypton through orbital. Atomic energy shells are subdivided into sub-energy levels., In this case, 2+2+6+2+6+2+10+6+2+1= 39 and Z=39, so the answer is correct. A slightly more complicated example is the electron configuration of bismuth (symbolized Bi, with Z = 83). The periodic table gives the following electron configuration: 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p65s2 4d10 5p6 6s2 4f14 5d10 6p3.