15. Select the correct electron configuration for sulfur (Z-16) p 2s 2p B. 13232

Question

15. Select the correct electron configuration for sulfur (Z-16) p 2s 2p B. 132322p 3 3p C. 1232p 3s 3p 16. Select the correct electron configuration for Cu (Z-29) A. [Ar]423 B. [Ar]4s 3d D. [Ar)4s-4d E. [Ar]5s 4d 17. In the ground state of an atom of silver (Ag), how many electrons will there with the quantum number -1? (The n, mi and m, quantum numbers may ha appropriate values.) A. 9 B. 12 C. 18 D. 24 E. 36 An atom of element number 33 (As) is in its ground electronic state. Which the following sets of quantum numbers could not apply to any of its electror 18. a. n=2 b. n=3 d. n=4 n=3 n=4 A. a B. b D. d E. e

Explanation / Answer

15. Option D

16. Option B, since completely filled orbitals configuration is more stable

17. Option C, 18 since l=1 means p-subshell, for silver there are three p-subshells each with 6 electrons (2p,3p and 4p)

18. Option E, since l value - 2 is not there for As, that means there is no 4d shell in As.

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