A student wants to draw a model of an atom. Which statement describes how to find the number of neutrons to include in the model? (1 point)

Question

• Add the number of electrons to the number of protons.
• Subtract the number of electrons from the number of protons.
• Add the atomic number and the mass number.
• Subtract the atomic number from the mass number.

Answer 1

To find the number of neutrons in an atom, you should subtract the atomic number from the mass number.

Thus, the correct statement is:

• Subtract the atomic number from the mass number.

This is because the atomic number represents the number of protons, and the mass number is the total number of protons and neutrons in the nucleus. To find the number of neutrons, you can use the formula:

Number of Neutrons = Mass Number - Atomic Number.