Atomic Structure Question 307

Question: The outer electronic structure $ 3s^{2}3p^{5} $ is possessed by [Pb. PMT 2002; Pb. CET 2001]

Options:

A) Cl

B) O

C) Ar

D) Br

Show Answer

Answer:

Correct Answer: A

Solution:

The atomic number of chlorine is 17 its configuration is $ 1s^{2}2s^{2}2p^{6}3s^{2}3p^{5} $



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