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12 questions from this quiz
Number of nuclei decaying per second
1 disintegration per second
A=λNA = \lambda NA=λN
The radioactive decay constant
s−1\text{s}^{-1}s−1
Time for half the nuclei to decay
T1/2=0.693/λT_{1/2} = 0.693/\lambdaT1/2=0.693/λ
Fast decay with large decay constant
1/161/161/16
Individual decay is random but large numbers are predictable
Both decrease exponentially
3×1083 \times 10^83×108 nuclei
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