The Atomic Number of an Atom is Determined by the Number

Question

The atomic number of an atom is determined by the number of
A) protons.
B) neutrons.
C) electrons.
D) protons and neutrons.
E) protons and electrons.

Accepted Answer

The atomic number of an atom is determined by the number of protons it has. This is because the atomic number is the number of positively charged protons in the nucleus of an atom, which determines its chemical properties and place on the periodic table.