At radioactive equilibrium

CHEMISTRY · Subjective · US High School · Chemistry · Atomic Structure & Nuclear · Atomic Structure & Nuclear

Problem

At radioactive equilibrium, the ratio between two atoms of radioactive elements

A

and

B

are

3.1 \times 10^9 : 1

. If half-life period of

A

2 \times 10^{10} \text{ year}

, what is half-life of

B