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Assertion : He and Be have similar valen...

Assertion : He and Be have similar valence shell electronic cofiguration `ns^(2)`
Reason :Both are chemically inert.

A

If both (A) and (R ) are correct and (R ) is the correct explanation of (A)

B

If both (A) and (R ) are correct,but (R ) is the correct explanation of (A)

C

If (A) is correct but (R ) is incorrect

D

If (A) is incorrect but (R ) is correct

Text Solution

Verified by Experts

The correct Answer is:
c
Correct Assertion : Electronic configuration of He is `1s^(2)` and that of Be is `1s^(2)2s^(2)`.
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