Question

A radioactive element x has half life of 30 days and will decay to become another new element Y..
a) calculate decay constant
b) how long it will take for 90% of the no.Of atom in radioisotope x to decay?

Answer 1

a.) Having decay constant as t=0.693/decay constant. Therefore decay constant=0.693/t (i.e time).
Decay constant=0.693/30
=0.02

Answer 2

a.) Having decay constant as t=0.693/decay constant. Therefore decay constant=0.693/t (i.e time).
Decay constant=0.693/30
=0.02