An atom's "atomic number" is
A) the number of protons in its nucleus.
B) the number of electrons orbiting the nucleus of the neutral atom.
C) Both of the above.
D) the number of electrons orbiting the nucleus of the ionized atom.
E) All of the above.

Question

Quizplus · Accepted Answer

The atomic number is defined as the number of protons in the nucleus of an atom, which also equals the number of electrons in a neutral atom.

An Atom's "Atomic Number" Is