Group I | Group II |
P) NaCl | 1) Coordination bond |
Q) $H_2$ | 2) Polar covalent bond |
R) $Pd-P$ bond in $Pd(PPh_3)_4 | 3) Covalent bond |
S) $C-Cl$ bond in $CH_3Cl $ | 4) Ionic bond |
Resonance in X$_2$Y can be represented as
The enthalpy of formation of X$_2$Y is 80 kJ mol$^{-1}$, and the magnitude of resonance energy of X$_2$Y is: