NEET Chemistry Ionic Bond MCQ Question
Which combination of statements about molecular geometry and dipole moments is correct?
The shape of BF3 is trigonal planar with a zero dipole moment. 2. NH3 has a pyramidal shape with a net dipole moment due to a lone pair on nitrogen.
BeF2 has a bent shape with a non-zero dipole moment. 2. NH3's dipole moment is canceled out by its lone pair.
The bond angles in NH3 are 120 degrees. 2. BF3 has a net dipole moment due to its geometry.
NH3 and NF3 both have a linear geometry. 2. The lone pair on nitrogen in NH3 does not affect its dipole moment.
Correct Answer
Detailed Explanation
BF3 has a trigonal planar shape with bond angles of 120 degrees, resulting in a zero dipole moment due to the symmetry of the molecule. NH3 has a pyramidal shape caused by the lone pair of electrons on nitrogen, which creates a net dipole moment.
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