A pure sample initially contains nuclei of a parent nuclide P (half-life ) and none…

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

Problem

A pure sample initially contains

1.0\times10^{12}

nuclei of a parent nuclide P (half-life

T_{1/2}=10\,\text{d}

) and none of its radioactive daughter D (half-life

T_{1/2}=1\,\text{d}

). Calculate the activity of D after

2\,\text{d}

. (Take

\ln2=0.693

.) (a)

1.0\times10^{6}\,\text{Bq}

(b)

7.0\times10^{5}\,\text{Bq}

(c)

5.5\times10^{5}\,\text{Bq}

(d)

4.5\times10^{5}\,\text{Bq}