Why pentahydride of nitrogen is not possible?

Answer 1

To form a pentahydride, nitrogen has to undergo sp3d hybridisation.

However, nitrogen does not have any 'd' orbitals and hence cannot form pentahydride.

Answer 2

A pentahydride of nitrogen is not possible because nitrogen typically forms triple bonds with itself in molecular compounds, making it challenging for nitrogen to accommodate five hydrogen atoms. Additionally, the large size and electronegativity difference between nitrogen and hydrogen makes it energetically unfavorable for nitrogen to bond with five hydrogen atoms.