Suppose the half-life of an isotope is 10 years. After how many years will half of this isotope have decayed into its daughter element? 5 years 20 years 10 years

the answer is 10 years

Explanation:

An atom may contain an unstable nucleus that spontaneously transforms into a more stable form by emitting particles and energy. Half-life is a measure of the time needed for one-half of the atomic nuclei of a given radioactive substance to decay in its radioactivity. This time is a constant and can be estimated as an exponential unit which is dependent on the type of radioactive isotope. For example, Carbon-14 (C14) is a radioactive isotope of carbon that has a half-life of 5730 years.

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