Select the correct statement with reference to molecules BF3 and NH3

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BF3 and NH3 have same dipole moment

Dipole moment of NH3 is smaller than that of BF3

BF3 molecule has a planar structure, while the NH3 molecule is pyramidal

The nitrogen atom has lone pair of electrons, while the boron atom has a free (vaccant) valence orbital

answer is C.

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Detailed Solution

Symmetrical molecule BF3 show zero dipole moment. Unsymmetrical molecule NH3 show non zero dipole moment.

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