Which of the Following May Be Called or Made Subject

question 19

Multiple Choice

Which of the following may be called or made subject to discovery?

• A)Correspondence
• B)Notes
• C)Opinions
• D)All of the above

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Definitions:

Radioactive Isotopes

Radioactive isotopes, or radioisotopes, are variants of chemical elements that emit radiation due to an unstable nucleus and undergo radioactive decay.

Atomic Number

The number of protons in the nucleus of an atom, unique to each element.

Naturally Occurring

Refers to substances, materials, or phenomena that exist in nature without human intervention.

Atomic Numbers

The number of protons in the nucleus of an atom, which determines the chemical properties of the element.