1.

A : NaN_(3) and Na_(3) N both are stable. R : Na when reacted with atmospheric nitrogen at different temperature forms. Stable NaN_(3) and Na_(3)N

Answer»

If both ASSERTION & Reason are TRUE and the reason is the correct explanantion of the assertion, then mark (1).
If both Assertion & Reason are true and the reason is the correct explanantion of the assertion, then mark (2).
If Assertion is true statement but Reason is false. Them mark (3).
If both Assertion and reason are false statement, then mark (4).

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