There are samples of two different isotopes,X and Y.Both contain the same number of radioactive atoms.Sample X has a half-life twice that of Y.How do their decay rates compare?
A)X has a greater rate than Y.
B)X has a smaller rate than Y.
C)The rates of X and Y are equal.
D)The rate depends on atomic number,not half-life.

Question

Quizplus · Accepted Answer

The decay rate of a radioactive isotope is related to its half-life, where a shorter half-life implies a faster decay rate. Since sample X has a half-life twice that of Y, it will decay slower than Y. Therefore, option B is correct, and X has a smaller decay rate compared to Y.

There Are Samples of Two Different Isotopes,X and Y