There are samples of two different isotopes, X and Y. Both contain the same number of radioactive atoms. Sample X has a half-life half that of Y. How do their decay rates compare?

a. The rates of X and Y are equal.
b. X has a greater rate than Y.
c. The rate depends on atomic number, not half-life.
d. X has a smaller rate than Y.


B

Physics & Space Science

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