Question

A diatomic molecule has a dipole moment equal to 1.5 D. If the bond length is 80.0 pm, what charge (in units of e) exists on each atom?

Answer 1

Answer:

Correct option is

D

25% of e

Let the electronic charge on each atom be x.

The dipole moment is 1.2D

We know, 1D=10

−18

esu.cm

The dipole moment in esu cm units is 1.2×10

−18

esu.cm

The dipole moment is the product of its charge and the inter atomic distance.

It would be x×100×10

−10

=1.2×10

−18

x=1.2×10

−10

esu

But the electronic charge e=4.8×10

−10

esu

Partial electronic charge on each atom =

4.8×10

−10

esu

1.2×10

−10

esu

​

×100

x=25 % of e

Explanation: