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Chemistry-Covalent Bond

NEET Chemistry Covalent Bond MCQ Question

Type: MCQ-numerical-Medium-Class 11

Given that the bond length of the H-F bond in the HF molecule is 91.7 pm and the dipole moment is 1.91 D, calculate the magnitude of the partial charge (in units of electron charge e) on the hydrogen atom.

A

0.42 e

B

0.34 e

C

0.28 e

D

0.22 e

Correct Answer

Option B

Detailed Explanation

The dipole moment (μ) is the product of the charge (q) and the distance (d) between charges. Using μ = q × d, where μ = 1.91 D = 1.91 × 3.33564 × 10^-30 C·m, and d = 91.7 × 10^-12 m, solving for q gives approximately 0.34 e.

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