The number of neutrons in an atom can be determined by
A) subtracting the atomic number from the atomic mass.
B) subtracting the atomic mass from the atomic number.
C) adding the atomic mass to the atomic number.
D) adding the number of protons to the number of electrons.
E) adding the number of protons to the atomic number.

Question

Quizplus · Accepted Answer

The number of neutrons is found by subtracting the atomic number (number of protons) from the atomic mass (sum of protons and neutrons).

The Number of Neutrons in an Atom Can Be Determined