Which term denotes the total number of protons in the nucleus of an atom?

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Multiple Choice

Which term denotes the total number of protons in the nucleus of an atom?

Explanation:
The number of protons in an atom’s nucleus is called the atomic number. It uniquely identifies the element and, in a neutral atom, also equals the number of electrons. Atomic mass, or mass number, is the total count of protons and neutrons, not just protons. Nucleon number refers to the total number of protons and neutrons as well. A simple phrase like proton count describes the same idea, but the standard term used is atomic number.

The number of protons in an atom’s nucleus is called the atomic number. It uniquely identifies the element and, in a neutral atom, also equals the number of electrons. Atomic mass, or mass number, is the total count of protons and neutrons, not just protons. Nucleon number refers to the total number of protons and neutrons as well. A simple phrase like proton count describes the same idea, but the standard term used is atomic number.

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