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What is a radioactive isotope?

Answer 1

Isotopes that can emit radioactive radiations(i.e.alpha, beta and gamma rays) are called radioactive isotopes.

Atoms of the same element with a different mass number (number of protons and neutrons in the nucleus) are called isotopes. Isotopes of elements with an atomic number of 82 or more are unstable and emit certain radiations; this process is known as radioactivity, and the isotopes in question are referred to as radioactive isotopes.

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Answer 2

Lydia Adams

A radioactive isotope is an unstable form of an element that undergoes radioactive decay, emitting radiation in the process. This decay changes the nucleus of the atom, resulting in the emission of alpha particles, beta particles, or gamma rays.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.