Chemistry

Problem

A radioactive isotope has a mean life of

2.5\,\text{ms}

. Determine its decay constant

\lambda

(in

\text{s}^{-1}

). a)

2.8\times10^{2}\,\text{s}^{-1}

4.0\times10^{-1}\,\text{s}^{-1}

4.0\times10^{2}\,\text{s}^{-1}

4.0\times10^{1}\,\text{s}^{-1}