Eduprobe
Question:
Which of the following statement is wrong?
N2O4 has two resonance structures.
Nitrogen cannot form dπ-pπ bond.
The stability of hydride increases from NH3 to BiH3 in group 15 of the periodic table.
Single N-N bond is weaker than the single P-P bond.
Solution:
A) As we move down the group, the tendency to form a covalent bond with small H decreases which results in losing bonding within the molecules and hence MH bond enthalpy decreases.
B) N does not have a d-orbital and hence, no pπ-dπ bonding.
C) N is small in size and hence bond length will be small. Smaller the bond length more will be the lone pair - lone pair repulsions. So, it is weaker than a p-p bond.
D) N2O4 has four resonating structures.
So, the wrong statements are A and D