Across
- 3. the ability for an atom to attract electrons in a chemical reaction
- 6. A positively charged ion
- 9. A simplified representation of the valence shell electrons in an atom
- 11. Elements in groups 1-2, and 13-18 on the periodic table
Down
- 1. An electron located in the outermost shell of an atom
- 2. Elements in groups 3-12 on the periodic table
- 4. An atoms required amount of energy to remove an electron
- 5. A reduction in the effective nuclear charge on the electron cloud
- 7. Atoms must attain 8 electrons in its outermost energy level to become stable
- 8. A negatively charged ion
- 10. An occurrence of similar properties of elements after a certain amount of time