Question

The parameter used to measure the stability of the nucleus is

• A. Number of electrons
• B. Number of Protons
• C. Number of neutrons
• D. Average binding energy per nucleon

Answer 1

The correct option is D Average binding energy per nucleon

The average binding energy per nucleon determines the stability of the nucleus.

More the value of average binding energy, greater the stability of the nucleus.

$\text{Iron}-56$ is highly stable nucleus with binding energy per nucleon of $8.75\text{MeV}$

Hence, option $\left(D\right)$ is correct.