The following table shows some measurements of the decay rate of a radio nuclei sample. Find the disintegration constant.

$R=R_{ 0 }{ e }^{ -\lambda t }$

$In\ R=In\ {{R}*{0}}-\lambda t$
$In\ R=-\lambda t+In\ {{R}*{0}}$

Slop of in R V/s t is$’-\lambda '$

$\begin{align}

& -\lambda =\frac{0-1.52}{218-164} \

& \lambda =0.028\ \min it{{e}^{-1}} \

\end{align}$