Only of the original nuclei of a radioactive isotope remain undecayed after

CHEMISTRY · Subjective · US High School · Chemistry · Atomic Structure & Nuclear · Atomic Structure & Nuclear

Problem

Only

20\%

of the original nuclei of a radioactive isotope remain undecayed after

15\,\text{days}

. Determine the decay constant

\lambda

of the isotope (in

\text{day}^{-1}