Question

a physical science student is studying the number of subatomic particles in an element. which information can be used to determine the number of neutrons in an atom? the masses of the electrons and protons can be added together. the atomic number of the element can be used. the atomic number can be subtracted from the atomic mass. the column number of the periodic table can be used.

Explanation:

The atomic number represents the number of protons in an atom. The atomic mass is approximately the sum of protons and neutrons. So, subtracting the atomic number (number of protons) from the atomic mass gives the number of neutrons.

Answer:

The atomic number can be subtracted from the atomic mass.