The relation between half life period and decay constant is

Define half - life of a radioactive substance . Write the relation between half - life and decay constant .

The relation between half life (T) and decay constant (lambda) is

Define half life period of a radioactive sample. Arrive at the relation between half life and decay constnat.

Derive the relationship between half life and decay constant of a radioelement.

What is the relation between half-life and decay constant of a radioactive isotope ?