Which of the following compounds has the leas | vedclass

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(B) The covalent character of a $P-H$ bond in various compounds can be determined by the distribution of formal charge per bond. The higher the formal

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$P_2H_6^{2+}$

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(B) The covalent character of a $P-H$ bond in various compounds can be determined by the distribution of formal charge per bond. The higher the formal charge distribution per bond,the lower the covalent character.Formal charge distribution per bond = $\frac{	ext{Total Charge}}{	ext{Number of } P-H 	ext{ bonds}}$For $PH_3$: $\frac{0}{3} = 0$For $P_2H_6^{2+}$: $\frac{2}{8} = 0.25$ (Note: $P_2H_6^{2+}$ has $8$ $P-H$ bonds)For $P_2H_5^+$: $\frac{1}{7} \approx 0.14$For $PH_4^+$: $\frac{1}{4} = 0.25$Comparing the values,$P_2H_6^{2+}$ and $PH_4^+$ show higher charge distribution,but based on standard chemical analysis of these species,$P_2H_6^{2+}$ exhibits the least covalent character due to the delocalization of charge across the $P-P$ framework.

Which of the following compounds has the least covalent character in its $P-H$ bond?

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