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. Add the atomic number and the mass number
2. Subtract the atomic number from the mass number
3. Add the number of electrons to the number of protons
4. Subtract the number of electrons from the number of protons
2. Subtract the atomic number from the mass number
The correct statement to find the number of neutrons to include in the model of an atom is option 2: Subtract the atomic number from the mass number.
To find the number of neutrons to include in the model of an atom, you need to know the atomic number and the mass number of the atom. The atomic number represents the number of protons in the atom's nucleus, while the mass number represents the total number of protons and neutrons in the nucleus.
The correct statement that describes how to find the number of neutrons is option 2: Subtract the atomic number from the mass number. By subtracting the atomic number from the mass number, you can determine the number of neutrons in the atom.