Assertion and Reason Type question:

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Both Assertion and Reason are correct and reason is the correct explanation of Assertion

Both Assertion and Reason are correct and reason is NOT the correct explanation of Assertion

Assertion is correct but the reason is INCORRECT

Both Assertion and Reason are INCORRECT

answer is C.

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Detailed Solution

The electronic configuration of Helium (He) is

{1s}^{2}

. It follows duplet rule.

It has duplet configuration. It does not react with other elements. Hence it is chemically inert and highly stable.

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