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Electronic Configuration of Actinides

An element in...

Question

An element in period 3 which does not form an oxide:

A

Na

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B

Al

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C

Ar

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D

Cl

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Solution

The correct option is B Ar
Among period 3 elements, only Ar doesn't form any oxide as it has complete octet and doesn't have any tendency to lose/gain the electron.

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