Across
- 2. Column in the periodic table
- 4. Amount of energy required to remove the most loosely bound electron
- 6. Creator of the periodic table
- 8. ... electrons - electrons in outer energy level of an atom
Down
- 1. Substance that resists electricity
- 3. They have properties between metals and nonmetals
- 5. Row in the periodic table
- 7. Consists of protons and neutrons