Chemistry

Problem

Which one of the following correctly relates the half-life

T_{1/2}

of a radioactive isotope to its decay constant

\lambda

? a)

T_{1/2}=\dfrac{1}{\lambda\ln 2}

T_{1/2}=\dfrac{\ln 2}{2\lambda}

T_{1/2}=\dfrac{\log_{10} 2}{\lambda}

T_{1/2}=\dfrac{\ln 2}{\lambda}