Nuclide A has decay constant

CHEMISTRY · Subjective · US High School · Chemistry · Atomic Structure & Nuclear · Atomic Structure & Nuclear

Problem

Nuclide A has decay constant λA=2.0×10−4 s−1\lambda_A = 2.0\times10^{-4}\,\text{s}^{-1}, whereas nuclide B has λB=5.0×10−5 s−1\lambda_B = 5.0\times10^{-5}\,\text{s}^{-1}. Which nuclide is more stable? Give reason in one sentence.

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