For a radioactive sample observed for a duration equal to one mean life

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

Problem

\bigl(1/\lambda\bigr)

, the fraction of the initial nuclei that will have decayed is closest to (a)

50\%

(b)

63\%

(c)

69\%

(d)

37\%