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| $List-I$ | $List-II$ |
| $(A)$ $\Psi_{ MO }=\Psi_{ A }-\Psi_{ B }$ | $(I)$ Dipole moment |
| $(B)$ $\mu=Q \times I$ | $(II)$ Bonding molecular orbital |
| $(C)$ $\frac{N_{b}-N_{a}}{2}$ | $(III)$ Anti-bonding molecualr orbital |
| $(D)$ $\Psi_{ MO }=\Psi_{ A }+\Psi_{ B }$ | $(IV)$ Bond order |
(Plank's const. $ h = 6. \times 10^{-34}\, Js\,;$ mass of electron $= 9.1091 \times 10^{-31}\, kg\,;$ charge of electron $e= 1.60210 \times 10^{-19}\, C\,;$ permittivity of vaccum $\in _0 = 8.854185 \times 10^{-12} \,kg^{-1} \,m^{-3} A^2$)
| Column $-I$ | Column $-II$ |
| $(A)$ Ionisation potential | $(P)\; O < F < N$ |
| $(B)$ Electronegativity | $(Q)\; N < O < F$ |
| $(C) \;Z_{eff}$ | $(R) \;O < N < F$ |
| $(D)$ Electron affinity | $(S)\; N < C< O$ |
$PCl _{5}, BrF _{5}, \& IF _{7}, BrF _{5} \& IF _{7}$