A radioactive isotope has a mean life of

CHEMISTRY · Single correct · US High School · Chemistry · Atomic Structure & Nuclear · Atomic Structure & Nuclear

Problem

2.5\,\text{ms}

. Determine its decay constant

\lambda

(in

\text{s}^{-1}

). (a)

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

(b)

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

(c)

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

(d)

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