1.

Consider the molecules `CH_(4),NH_(3)` and `H_(2)O` which of the given statement is false ?A. The H-O-H bond angle in `H_2O` is larger than the H-C-H bond angle in `CH_4`B. The H-O-H bond angle in `H_2O` is smaller than the H-N-H bond angle in `NH_3`C. The H-C-H bond angle in `CH_4` is larger than the H-N-H bond angle in `NH_3`D. The H-C-H bond angle in `CH_4`, the H-N-H bond angle in `NH_3` and the H-O-H bond angle in `H_2O` are all the greater than `90^@`

Answer» Correct Answer - A::D
As the number of lone pair of electrons on central element increases, repulsion between those lone pair of electrons increases and therefore, bond angle decreases.
Molecules Bond angle
`CH_4` (no lone pair of electrons) `109.5^@`
`NH_3` (one lone pair of electrons ) `107.5^@`
`H_2O` (two lone pair of electrons ) `104.45^@`


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