What do you think? The graph to the left shows the ratio of the number of undeca

Question

What do you think?

The graph to the left shows the ratio of the number of undecayed nuclei to the initial number of undecayed nuclei for samples of two different radioactive isotopes, labeled A and B. Please fill in the blanks below using the options given. If we start with equal numbers of radioactive nuclei in the two samples, the decay rate for the A sample is always______(bigger smaller) than B's. The A isotopes have a half-life that is _____(longer than shorter than equal to) the half-life of the B isotopes. The total time represented on the graph is equal to_____(less than more than exactly) three half-lives for the B sample.

Explanation / Answer

a) bigger

b) shorter

c) more than

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