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

Vedclass · Accepted Answer

$PH_4^+ > NH_3$ (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.

List-$A$	List-$B$
$(1)$ $AB_3E_2$	$(A)$ $BrF_5$
$(2)$ $AB_2E_2$	$(B)$ $NH_3$
$(3)$ $AB_5E$	$(C)$ $H_2O$
$(4)$ $AB_3E$	$(D)$ $ClF_3$

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

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List-$A$ List-$B$

$(1)$ $AB_3E_2$ $(A)$ $BrF_5$

$(2)$ $AB_2E_2$ $(B)$ $NH_3$

$(3)$ $AB_5E$ $(C)$ $H_2O$

$(4)$ $AB_3E$ $(D)$ $ClF_3$

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