1.

Assertion : N_(2) is less reactive than P_(4). Reason : Nitrogen has more electron gain enthalpy than phosphorus.

Answer»

Both ASSERTION and REASON are correct statements, and reason is the correct EXPLANATION of the assertion.
Both assertion is and reason are correct statements, but reason is not the correct explanation of the assertion.
Assertion is correct, but reason is wrong statement.
Assertion is wrong but reason is correct statement.

Solution :Correct reason. P-P single bond in `P_(4)` molecules is much weaker `(213kJmol^(-1))` than `N-=N` triple bond `(941.2 kJ mol^(-1))` in `N_(2)`


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