Although geometries of ${ NH }_{ 3 }$ and $H _{ 2 }O$

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chemicalbonding

#1

Although geometries of ${ NH }_{ 3 }$ and
$H _{ 2 }O$ molecules are distorted tetrahedral, bond angle in water is less than that of ammonia. Discuss.


#2

In $H { 2 }O$ molecule, there is lone pair-lone pair repulsion due the presence of two lone pairs of electrons while in
${ NH }
{ 4 }$ molecule there found only lone pair-bond pair repulsion. According to VSEPR theory, the former one is more stronger and hence, the bond angle in water is less than that of ammonia