Q30 · CSIR-NET Chemistry, June 2012

Paper: CSIR-NET June 2012 · Subject: Inorganic Chemistry · Chapter: Chemical Bonding · Topic: Dipole Moment Polarity · Marks: 2 · Difficulty: Hard

The decreasing order of dipole moment of molecules is

(a)$\mathrm{NF}_{3}>\mathrm{NH}_{3}>\mathrm{H}_{2} \mathrm{O}$

(b)$\mathrm{NH}_{3}>\mathrm{NF}_{3}>\mathrm{H}_{3} \mathrm{O}$

(c)$\mathrm{H}_{2} \mathrm{O}>\mathrm{NH}_{3}>\mathrm{NF}_{3}$

(d)$\mathrm{H}_{2} \mathrm{O}>\mathrm{NF}_{3}>\mathrm{NH}_{3}$

Answer

Answer: C ✓ checked by 4AB · confidence high

The source book printed D; on checking, C is correct — see the explanation.

Book printed (d).

Explanation

H₂O (1.85 D) > NH₃ (1.47 D) > NF₃ (0.23 D) (c).

Study loop for Chemical Bonding