Question

The dipole moments of CCl₄, CHCl₃ and CH₄ are in the order:

Options

• CHCl₃ < CH₄ = CCl₄

• CCl₄ < CH₄ < CHCl₃

• CH₄ < CCl₄ < CHCl₃

• CH₄ = CCl₄ < CHCl₃

Answer 1

CH₄ = CCl₄ < CHCl₃

Explanation:

\[\ce{µ_{CCl_{4}}}\] = \[\ce{µ_{CH_{4}}}\] = 0 due to symmetrical structure but \[\ce{µ_{CHCl_{3}}}\] ≠ 0.

So dipole moment order is CH₄ = CCl₄ < CHCl₃.