The Decay Constant,k,is Given for Each of the Beta Emitters

question 10

Multiple Choice

The decay constant,k,is given for each of the beta emitters below.Which one has the shortest half life?

• A).¹¹⁵In,4.29 × 10^-9 s^-1
• B).¹³¹I,9.94 × 10^-7 s^-1
• C).²¹⁷At,21.4 s^-1
• D).⁴²K,1.55 × 10^-5 s^-1

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