p-Block elementsHard

Question

Which one of the following configuration represents a noble gas ?

Options

A.1s² 2s² p⁶, 3s²

B.1s² 2s² p⁶, 3s¹

C.1s² 2s² p⁶

D.1s² 2s² p⁶, 3s² p⁶, 4s²

Solution

Group No. 18 general valence shell electron configuration is ns²np⁶.

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