(I) $>$ (II) $>$ (III)

(II) $>$ (I) $>$ (III)

(III) $>$ (II) $>$ (I)

(I) $>$ (III) $>$ (II)

octahedral

tetrahedral

linear

square pyramidal

$\mathrm{NH}_2^{-}>\mathrm{NH}_3>\mathrm{NH}_4^{+}$

$\mathrm{NH}_4^{+}>\mathrm{NH}_3>\mathrm{NH}_2^{-}$

$\mathrm{NH}_3>\mathrm{NH}_2^{-}>\mathrm{NH}_4^{+}$

$\mathrm{NH}_3>\mathrm{NH}_4^{+}>\mathrm{NH}_2^{-}$

$\left(\mathrm{BCl}_3: s p^3\right) ;\left(\mathrm{PCl}_5: s p^3 d^2\right) ;\left(\mathrm{NH}_3: s p^2\right)$ and $\left(\mathrm{SF}_6: s p^3 d\right)$

$\left(\mathrm{BCl}_3: s p^2\right) ;\left(\mathrm{PCl}_5: s p^3 d\right) ;\left(\mathrm{NH}_3: s p^3\right)$ and $\left(\mathrm{SF}_6: s p^3 d^2\right)$

$\left(\mathrm{BCl}_3: s p^2\right) ;\left(\mathrm{PCl}_5: s p^3 d^2\right) ;\left(\mathrm{NH}_3: s p^3\right)$ and $\left(\mathrm{SF}_6: s p^3 d\right)$

$\left(\mathrm{BCl}_3: s p^3\right) ;\left(\mathrm{PCl}_5: s p^3 d\right) ;\left(\mathrm{NH}_3: s p^2\right)$ and $\left(\mathrm{SF}_6: s p^3 d^2\right)$