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Elements having complete filled outermos...

Elements having complete filled outermost s and p orbital are known as:

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The correct Answer is:
A,B,D
Unit of `k=("mol"/"litre")^(1-n) xx s^(-1)` for n=1 is `sec^(-1)`, n=2 is litre `mol^(-1) sec^(-1)`, n=3 is `"litre"^2 mol^(-2) sec^(-1)`
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