Question

Why N2 exist as gas at room temperature but P4 is a solid ?

Answer 1

N is diatomic while p4  is tetraatomic molecule.n cannot form pentahalides whereas p4 can because except N others have empty d orbital. N show h bondind but p4 does not but it experiences weak wander vall forces. So N is a gas at room temperature at room temperature whereas p4 does not.