Chemistry

Problem

Two radioactive nuclides,

P

and

Q

, have decay constants

\lambda_P = 4.0\times10^{-4}\,\text{s}^{-1}

and

\lambda_Q = 1.0\times10^{-4}\,\text{s}^{-1}

respectively. Which nuclide has the longer half-life? a)

P

b) Both have the same half-life c)

Q

d) Cannot be decided from the given data