1. The number of protons in an atom is equal to the atomic number of the element.
2. The number of neutrons in an atom is found by subtracting the atomic number from the mass number.
3. The number of electrons in a neutral atom is equal to the number of protons.
4. In a positive ion, the number of electrons is less than the number of protons; in a negative ion, the number of electrons is greater than the number of protons.
5. The mass number is the sum of the number of protons and neutrons in the nucleus.
6. Isotopes are atoms of the same element with different numbers of neutrons.
7. The atomic number determines the identity of the element.
8. The charge of an ion is determined by the difference between the number of protons and electrons.
9. The number of valence electrons influences the chemical properties of an element.
10. Electrons occupy energy levels or shells around the nucleus.
Parent Tip: Review the logic above to help your child master the concept of basic atomic structure worksheet.
