1.

Assertion : First ionisation enthalpy of N is higher than O. Reason : Extra stability of fully filled up 2p subshell of N atom

Answer»

If both ASSERTION & REASON are true and the reason is the CORRECTEXPLANATION of the assertion.
If both Assertion & Reason are true but the reason is not the correctexplanation of the assertion.
If Assertion is true STATEMENT but Reason is false.
If both Assertion and Reason are false statements.

Answer :A


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