Answer to Question #238341 in General Chemistry for Ket

Question

The electronic configuration of the last layer for the elements of group 15 from nitrogen (N), phosphorus (P), arsenic (As), antimony (Sb) and bismuth (Bi) starts with? A) 2s¹2p² and ends with 7s²7p³ B) 2s²2p² and ends with 6s²6p² C) 2s²2p³ and ends with 6s²6p³ D) 3s¹3p² and ends with 5s²5d³

Answer 1

Since these elements are in group 15 (or VA), there are 5 valence electrons for all of them. They belong to periods from 2 (N) to 6 (Bi). Therefore, the last layer configuration will be 2s²2p³ for N, and 6s²6p³ for Bi.

Answer: C)