Which of the following has least covalent $\mathrm{P}-\mathrm{H}$ bond?
Which of the following has least covalent $\mathrm{P}-\mathrm{H}$ bond?
$\mathrm{PH}_{6}^{+}$
$\mathrm{P}_{2} \mathrm{H}_{6}$
$\mathrm{P}_{2} \mathrm{H}_{5}$
$\mathrm{PH}_{3}$
Solution
In $\mathrm{PH}_{6}^{+}, \mathrm{P}-\mathrm{H}$ bond will have ionic character due to electron attracting tendency of P-carrying positive charge and least covalent.
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