Across
- 2. last familiy in the periodic table
- 5. first group of the periodic table
- 8. A distinct group of atoms bonded together
- 9. common subgroup element
- 10. An atom that has the same number of protons/atomic number as other atoms of the same element do but that has a different number of neutrons/atomic mass
Down
- 1. Name of the rows in the periodic table
- 3. Most abundant metal on earth
- 4. An electron in the outer shell of an atom
- 6. Has a neutral charge and is found in the nucleus
- 7. Kind of particles that include protons, electrons and neutrons