October 02 - charge protons Neutrons Electrons 80 Br 35 45...

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1s 2 2s 2 2p 6 3s 2 3p 6 4s 2 3d 10 4p 6 5s 2 4d 10 5p 6 6s 2 4f 14 5d 10 6p 2 1. Write the full and condensed electron configuration for atoms of the element listed below. List the number of valence electrons and subshells in which they reside a. Indium(In 49) 1s 2 2s 2 2p 6 3s 2 3p 6 4s 2 3d 10 4p 6 5s 2 4d 10 5p 1 -> [Kr] 5s 2 4d 10 5p 1 3 valence’ electron: 5s, 5p b. Fluorine (F 9) 1s 2 2s 2 2p 5 -> [He] 2s 2 2p 5 7 valence’ electron: 2s, 2p c. Lead (Pb 82) 1s 2 2s 2 2p 6 3s 2 3p 6 4s 2 3d 10 4p 6 5s 2 4d 10 5p 6 6s 2 4f 14 5d 10 6p 2 -> [Xe] 6s 2 4f 14 5d 10 6p 2 4 valence’ electron: 6s, 6p 2. P or D? a. Se 34 1s 2 2s 2 2p 6 3s 2 3p 6 4s 2 3d 10 4p 4 -> P b. Cd 48 1s 2 2s 2 2p 6 3s 2 3p 6 4s 2 3d 10 4p 6 5s 2 4d 10 -> D c. Cl 17 1s 2 2s 2 2p 6 3s 2 3p 5 -> P 3. How man protons, neutrons and electrons are in ions of the isotopes below
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Unformatted text preview: charge protons Neutrons Electrons 80 Br 35 45 35 25 Mg 12 13 12 32 Na 11 21 11 4. a. How many core electrons are contained in an atom of silicon (Si 14)? 10 electrons as the [Ne] is the core b. How many valence d-electrons are contained in an atom of iron? 6 d-electrons c) What is the total number of s, p and d-electrons contained in an atom of iodine(I 53)? 53 s, p, d electrons: 10 s electrons 23 p electrons 20 d electrons...
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This note was uploaded on 03/27/2012 for the course CHEM 1301 taught by Professor Sillyman during the Spring '10 term at Texas A&M University, Corpus Christi.

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