Question

What radioactive isotopes are naturally occurring?

Answer 1

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● There are several sources of radioactive isotopes.

● Some radioactive isotopes are present as terrestrial radiation. Radioactive isotopes of radium, thorium, and uranium, for example, are found naturally in rocks and soil.

Answer 2

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There are several sources of radioactive isotopes. Some radioactive isotopes are present as terrestrial radiation. Radioactive isotopes of radium, thorium, and uranium, for example, are found naturally in rocks and soil