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Rate Constant and Half-life

APCHEM-SLKGAL

The rate of radioactive decay is first-order, so first-order kinetics can be used to study it. The half-life for the decay of fermium-252 is about 1 day. The half-life for the decay of ruthenium-106 is about 1 year.

Which of the following statements is the BEST conclusion from this information?

A

The rate constant for the decay of fermium-252 is equal to the rate constant for the decay of ruthenium-106.

B

The rate constant for the decay of fermium-252 is less than the rate constant for the decay of ruthenium-106.

C

The rate constant for the decay of fermium-252 is greater than the rate constant for the decay of ruthenium-106.

D

It is not possible to make any comparison of the rate constant for the decay of these two isotopes.