Question

The dipole moments of the given molecules are such that ______.

Options

• BF₃ > NF₃ > NH₃

• NF₃ > BF₃ > NH₃

• NH₃ > NF₃ > BF₃

• NH₃ > BF₃ > NF₃

Answer 1

The dipole moments of the given molecules are such that NH₃ > NF₃ > BF₃.

Explanation:

BF₃ is symmetrical molecular, `μ_("BF"_3)` = 0

`mu_"r"` is neutralized by the moment of third bond B F. Therefore µ = 0

`therefore mu_("NH"_3) > mu_("NF"_3) > mu_("BF"_3)`

or NH₃ > NF₃ > BF₃