Question

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

Answer 1

Subtract the atomic number from the mass number

Step-by-step explanation:

To calculate the number of neutrons in an atom, we can use the equation

N = M - n

where N is the number of neutrons, M is the mass number, and n is the atomic number.

The mass number of an atom is equal to the number of neutrons and protons it contains, while the atomic number is equal to the number of protons. Thus, by subtracting the number of protons (atomic number), from the number of protons and neutrons (mass number), we are left with neutrons.

Hope this helps!