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Electron Configuration

Electron Configuration - Electron Configuration Chemical...

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Electron Configuration & Chemical Periodicity 1. The electron configuration of Cl - is (the Periodic Table should help you): a. 1s<sup2< sup="">2s 2 2p 6 3s 2 3p 5 </sup2<> b. 1s 2 2s 2 2p 6 3s 2 3p 6 c. 1s 2 2s 2 2p 6 3d 10 d. 1s 2 2s 2 2p 6 e. 1s 2 2s 2 2p 6 3s 2 3p 6 3d 10 2. How many unpaired electrons are present in ground-state atomic nitrogen? 3. Which orbital is being filled in the lanthanide series? 4. Which of the following elements is not a metal? 5. Which of the following pairs is isoelectronic? a. Li, Be 2+ b. F - , Na + c. O, F - d. Li + , Na + 6. Which of the following has the largest radius? 7. Which of the following has the largest first electron affinity (ignore sign, just magnitude)? 8. The electron configuration of S 2- is (the Periodic Table should help you):
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9. How many unpaired electrons are present in ground-state atomic oxygen? a. 0 b. 2 c. 4 d. 3 e. 5 10. Which of the following has the largest radius? 11. Which of the following has the most favorable first electron affinity? 12. Which of the following has the lowest ionization energy? 13. How many unpaired electrons are there in Arsenic (As)? a. 0 b. 1 c. 2 d. 3 e. 4 14. An element has an electron configuration of 1s 2 2s 2 2p 6 3s 2 . Which electrons experience the greatest effective nuclear charge, and which experience the most shielding, respectively? greatest effective nuclear charge most shielding 15. Choose the electron configuration that results when the outermost electron is ionized from the Se atom.
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16. Which of the following has the highest electron affinity? 17. Which of the following has the largest first ionization energy? a. Cs b. Na c. Si d. Ne e. F 18. Which of the following elements has the most nonmetallic character?
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