Question

The half-life of a certain radioactive element is 3.465 days. Find its disintegration constant.

Answer 1

T_H = 3.465 days, λ = ?

We know that 
λ = `0.693/"T"_"H"`

λ = `0.693/( 3.465 xx 24 xx 60 xx 60)` S^-1

λ = 2.31 x 10^-6 s^-1