Which of the following orders cannot be expla | vedclass

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(D) The order $PH_4^+ > NH_3$ regarding bond angle cannot be explained by back bonding. In $PH_4^+$,the central atom $P$ is $sp^3$ hybridized with a b

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$PH_4^+ > NH_3$ (Bond angle)

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(D) The order $PH_4^+ > NH_3$ regarding bond angle cannot be explained by back bonding. In $PH_4^+$,the central atom $P$ is $sp^3$ hybridized with a bond angle of $109.5^o$. In $NH_3$,the central atom $N$ is $sp^3$ hybridized with one lone pair,resulting in a bond angle of $107^o$ due to $lp-bp$ repulsion. This difference is due to hybridization and $VSEPR$ theory,not back bonding.

Which of the following orders cannot be explained by back bonding?

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