Which of the following has the least covalent | vedclass

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(D) The covalent character of a bond is related to the electronegativity difference and the formal charge on the atoms involved. In $PH_4^+$,the phosp

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$PH_4^+$

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(D) The covalent character of a bond is related to the electronegativity difference and the formal charge on the atoms involved. In $PH_4^+$,the phosphorus atom carries a positive charge. $A$ positive charge on an atom increases its electronegativity,which decreases the electronegativity difference between $P$ and $H$. However,the $P-H$ bond in $PH_4^+$ is more ionic in character compared to $PH_3$ due to the formal charge,making it the least covalent among the given options.

Which of the following has the least covalent $P-H$ bond?

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