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Question

NH3 and BF3 form an adduct readily because they form:

A
Covalent bond
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B
Coordinate bond
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C
Ionic bond
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D
hydrogen bond
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Solution

The correct option is B Coordinate bond
The lone pair of N in NH3 and the vacant orbitals of B in BF3 help in the formation of a coordinate bond.
H3N:BF3

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