There Are Samples of Two Different Isotopes, X and Y

question 25

Multiple Choice

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.

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