Question

Half - life period for radioactive element is :

• A. always constant
• B. variable
• C. independent of final concentration
• D. independent of initial concentration

Answer 1

Answer: (A), (C), (D)

The correct options are
A independent of initial concentration
C always constant
D independent of final concentration

Constant of equilibrium is always independent of final concentration. It is also independent of initial concentration. It is given by the expression,
$t_1/2=\frac{0.693}{K}$
Therefore, $t_{1/2}$ is always constant and independent of initial concentration.