Two radioactive species and having half life in the ratio

CHEMISTRY · Single correct · US High School · Chemistry · Atomic Structure & Nuclear · Atomic Structure & Nuclear

Problem

Two radioactive species

A

and

B

having half life in the ratio

3 : 2

. If

A

goes to 25% decay in time

t_1

and

B

goes to 75% decay in time

t_2

. The ratio of

t_1

and

t_2

is: (1)

0.311 : 1

(2)

0.420 : 1

(3)

0.119 : 1

(4)

0.273 : 1