Question

Which material undergoes radioactive decay? all elements that have a half-life all elements that contain atoms with protons all elements that have turned into a new element all elements that have a consistent number of particles

Answer 1

A material containing unstable nuclei is considered radioactive. Three of the most common types of decay are alpha decay, beta decay, and gamma decay, all of which involve emitting one or more particles or photons.

Answer 2

Radioactive decay is called nuclear decay and is the process by which the unstable nucleus losses energy. The material that becomes unstable is known as radioactive. The common types in alpha, beta and gamma decay.

• The rate of decay or the activity of the substance is characterized by the half-life.

• That is the time taken by the activity of the given amount of a radioactive substance to decay its initial values. Other quantities include decay constant and mean lifetime.

Thus the option A is correct.

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