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Coordinate Bond

NH 3 and BF 3...

Question

$N H_{3}$ and $B F_{3}$ 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 $N H_{3}$ and the vacant orbitals of $B$ in $B F_{3}$ help in the formation of a coordinate bond.
$H_{3} N :\to B F_{3}$

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Coordinate Bond

Standard XII Chemistry

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