Question

The decay constant for Rb-87 is 0.116 min^-1. What is the half life in hr? (Enter answer with 4 decimal places.)

Answer 1

Using,

half-life (t1/2) = ln(2)/decay constant (l)

with,

decay constant (l) for Rb-87 = 0.116 min-1,

So,

The half-life (t1/2) = ln(2)/0.116

                             = 5.975 min/60

                             = 0.09958 h