Assertion: dinitrogen is inert at room temperature
Reason: dinitrogen directly combines with lithium to form ionic nitrides
Dear student,
There is a triple bond between two nitrogen atoms in the N2 molecule. It needs a large amount of energy to break a triple bond. Therefore N2 is inert or not reactive at room temperature. But dinitrogen combines with the metal to form ionic nitrides at higher temperatures. They don't combine directly.
Therefore, the assertion is correct but the reason is not correct.
Hence, the correct option is C.
Regards!
There is a triple bond between two nitrogen atoms in the N2 molecule. It needs a large amount of energy to break a triple bond. Therefore N2 is inert or not reactive at room temperature. But dinitrogen combines with the metal to form ionic nitrides at higher temperatures. They don't combine directly.
Therefore, the assertion is correct but the reason is not correct.
Hence, the correct option is C.
Regards!