Question

For a light nuclei, which of the following relation between the atomic number $(Z)$ and mass number $(A)$ is valid

• A. $A = \frac{Z}{2}$
• B. $Z = A$
• C. $Z = A/2$
• D. $Z = A^2$
• E. $A = Z^2$

Answer 1

Answer: (C)

Given,
Atomic number $=Z$
Mass number $=A$
For lighter nuclei, the relation between $Z$ and $A$ is
$Z=\frac{A}{2}$