Which of the following best describes an atomic number? An element's identity is defined by its atomic number; this means it represents the number of
options: A) protons plus neutrons in its nucleus.
B) electrons in the element.
C) protons in its nucleus.
D) neutrons in its nucleus.

The number of protons in a nucleus is called the atomic number and ever equals the number of electrons in orbit about that nucleus.

How do you find the atomic number?

The atomic number of an atom is equal to the number of protons in the nucleus of an atom or the number of electrons in an electrically neutral atom.

Suppose in a oxygen atom, there are 8 electrons and 8 protons. Thus the atomic number of O atom = number of electrons = number of protons = 8.

Thus, option "C" is correct, protons in its nucleus.

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Which of the following best describes an atomic number? An element's identity is defined by its atomic number; this means it represents the number of options: A) protons plus neutrons in its nucleus. B) electrons in the element. C) protons in its nucleus. D) neutrons in its nucleus.

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How do you find the atomic number?

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Which of the following best describes an atomic number? An element's identity is defined by its atomic number; this means it represents the number of
options: A) protons plus neutrons in its nucleus.
B) electrons in the element.
C) protons in its nucleus.
D) neutrons in its nucleus.