A neutral ammonia ( NH ₃ ) in its vapour state has an electric dipole moment of magnitude 5 10⁻³⁰ C -m. How far apart are the molecules centres of positive and negative charge.

Step-by-step solution

Dipole moment, p =5 10⁻³⁰ C - m The charge on neutral NH ₃ is q =7+1 3=10 e aligned & p = q (1) & 5 10⁻³⁰=10 1.6 10⁻¹⁹ 1 & 1= 5 10⁻³⁰ 16 10⁻¹⁹ =3.125 10⁻¹² ~m aligned