Guide Questions:
1. What is the charge on an electron?
2. What is the center of an atom onlled?
3. What is the atomic number of an atom equal to?
4. How many neutrons does this atom of carbon have?
5. The particles that are found in the nucleus of an atom are
The number of protons in the nucleus of the atom is equal to the atomic number (Z). The number of electrons in a neutral atom is equal to the number of protons. The mass number of the atom (M) is equal to the sum of the number of protons and neutrons in the nucleus.
