The half-life of a radioisotope is

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

Problem

5\,\text{days}

. What fraction of the original nuclei will remain undecayed after

15\,\text{days}

? (a)

\dfrac{1}{4}

(b)

\dfrac{7}{8}

(c)

\dfrac{1}{8}

(d)

\dfrac{1}{20}