Across
- 3. the physical and chemical properties of the elements repeat as a function of their atomic number
- 8. the process which results in an ion
- 9. a positive ion
- 10. electrons located in the highest occupied energy level
- 11. the group 1 elements which are highly reactive metals with one valence electron
- 13. the ability of an atom to attract electrons from another atom
Down
- 1. the bridging elements between the main element groups
- 2. the group 17 elements which are highly reactive nonmetals with seven valence electrons
- 4. an atom or a group of atoms that carry a charge
- 5. one half the distance between the nuclei of identical atoms that are bonded together
- 6. the energy required to remove one electron from an atom
- 7. a negative ion
- 12. the group 2 elements which are pretty reactive metals with two valence electrons