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Question

A compound having only one lone pair of electrons :

A
NH3
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B
CH4
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C
H2O
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D
Cl2
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Solution

The correct option is A NH3
Nitrogen in ammonia has one lone pair. Chlorine atom in a chlorine molecule contains a total of 6 lone pairs, i.e. 3 on each atom. Oxygen atom in water molecule has 2 lone pairs. And methane molecule has no lone pair.

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