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What Is Radioactive Pollution?

Radioactivity...

Question

Radioactivity is the emission of ionizing radiations by some atoms when their unstable nuclei disintegrate

A

True

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B

False

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Solution

Radioactivity is the emission of elementary particles by some atoms when their unstable nuclei disintegrate. It is a nuclear phenomenon. It is the spontaneous emission of radiation from the nucleus.

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Q. The time during which half of the unstable radioactive nuclei disintegrate of the sample of a radioactive element is called the
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Q. Consider the following statements:

1.

Radioactive decay is the process by which unstable atomic nuclei emit subatomic particle or radiation.

2.

When a radioactive nucleus decays, its nucleus break up, emits an alpha particle or beta particle and energy, and forms a new atom of a different element.
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Radioactivity is defined as a phenomenon in which certain _______________disintegrate by emitting certain invisible radiations.

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What Is Radioactive Pollution?

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