Question

What is the weight difference between a chlorine atom and a chloride ion

Answer 1

Mass of a chlorine atom (Cl)=35.5u

Cl+e- gives Cl-(Chlorine ion)

So,mass of Cl-=35.5u+mass of 1

electron.

Hence the weight diff. is =mass of an electron= 9.109×10^−31 kilograms