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?

Question

add the atomic number and the mass number
subtract the number of electrons from the number of protons
subtract the atomic number from the mass number
add teh number of electrons to the number of protons

Answer 1

The correct statement to find the number of neutrons to include in the model of an atom is:

Subtract the atomic number from the mass number.

This is because the atomic number represents the number of protons in the atom, and the mass number represents the total number of protons and neutrons. Thus, the number of neutrons can be calculated using the formula:

\[ \text{Number of neutrons} = \text{Mass number} - \text{Atomic number} \]