Isotope a Has a Decay Constant Of $0.861 \mathrm {~s} ^ { - 1 }$

question 68

Multiple Choice

Isotope A has a decay constant of $0.861 \mathrm {~s} ^ { - 1 }$ and isotope B has a decay constant of $0.627 \mathrm {~s} ^ { - 1 }$ . Which isotope has a longer mean life (time constant) ?

• A) isotope \(A\)
• B) isotope B

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