Question: Each statement that follows refers to a comparison between two radioisotopes, A and X. Indicate whether each of the following statements is true or false,

Each statement that follows refers to a comparison between two radioisotopes, A and X. Indicate whether each of the following statements is true or false, and why.
(a) If the half-life for A is shorter than the half-life for X, A has a larger decay rate constant.
(b) If X is "not radioactive," its half-life is essentially zero.
(c) If A has a half-life of 10 years, and X has a half-life of 10,000 years, A would be a more suitable radioisotope to measure processes occurring on the 40-year time scale.

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