Question

The radius of a nucleus mainly depends on :

• A. Proton number
• B. Electron Number
• C. Atomic mass number
• D. Neutron number

Answer 1

The correct option is C Atomic mass number

Radius of a nucleus $R=R_o{A}^{1/3}$

where $R_o=1.2fm$ and $A$ is the mass number of the nucleus.

Thus radius of a nucleus depends mainly on the mass number.