why is N2 is gaseous while other 15 grp elements are solids??

Question

besides telling why N2 is gaseous, plz also tell the reasons as to why other elements of group 15, combine with each other and form solids??

Answer 1

N2 is a really small, light, non-polar molecule with extremely low attractive Van der Walls' forces, so it has a low boiling point, and is a gas.
As the size of the molecules increases (phosphorus is P4 and so on) the size of these attractice forces increases, and so does melting point and boiling point.