P-Block Elements Ques 420

Question: Which one of the following configuration represents a noble gas

[CPMT 1976, 83, 89; BHU 1982; Pb. CET 2000 NCERT 1979; IIT Screening 1993; EAMCET 1993]

Options:

A) $ 1s^{2}, $ $ 2s^{2}2p^{6}, $ $ 3s^{2} $

B) $ 1s^{2}, $ $ 2s^{2}2p^{6}, $ $ 3s^{1} $

C) $ 1s^{2}, $ $ 2s^{2}2p^{6} $

D) $ 1s^{2}, $ $ 2s^{2}2p^{6}, $ $ 3s^{2}3p^{6}, $ $ 4s^{2} $

Show Answer

Answer:

Correct Answer: C

Solution:

$ 1s^{2}2s^{2}2p^{6}\to Neon $



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