Which statement is true about nuclear decay?

nuclear decay rates are constant.

nuclear decay rates are affected by the temperature of a sample.

nuclear decay rates are affected by the surface area of a sample.

nuclear decay rates are affected by atmospheric pressure.

   Nuclear decay rates are constant

Explanation:  Nuclear or radioactive decay occurs when energy is lost in unstable atoms, with emitting radiation. In this case, there are radioactive alpha, beta, gamma and other particles. In fact, this process presupposes the spontaneous transformation of unstable atomic nuclei. The characteristic of such processes is half-life, which represents a time period necessary for half of the amount of radioactive material to decay. It is not always predictable when a particular radioactive particle from an unstable atomic nucleus will be emitted, but the decay rate over time is constant.

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