1.

Consider the molecules CH_(4), NH_(3) and H_(2)O. Which of the given statements is false ?

Answer»

The H-0-H bond ANGLE in `H_(2)O ` is larger than the H-C-H bond angle in` CH_(4)`.
The H-0--H bond angle in `H_(2) O` is smaller than the H-N-H bond angle in `NH_(3)` .
The H-C- H bond angle in `CH_(4)` is larger than the H- N -H bond angle in `NH_(3)`.
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_(2)O` are all GREATER than `90^(@)`.

SOLUTION :The H-0-H bond angle in `H_(2)O ` is larger than the H-C-H bond angle in` CH_(4)`.
`CH_(4) rarr 109.5^(@) , NH_(3) rarr 107.5^(@) , H_(2) O rarr 104.45^(@)`.


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