Chemistry WAEC

Which of the following electrons configurations correctly represents an inert element?

A. 1s² 2s² 2p4
B. 1s² 2s² 2p6 3s²
C. 1s2 2s² 2p6 3s² 3p4
D. 1s² 2s² 2p6

Correct Answer: Option D

D. 1s² 2s² 2p6

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