Across
- 3. Electron in outer shell
- 5. A group of elements
- 6. The weighted average mass of the atoms
- 9. The quantity of energy that an isolated atomicnumber
- 11. Between metals and nonmetals
- 12. Row of chemical elements
- 13. Tendency of an atom
Down
- 1. Lack of metal attributes
- 2. diagrams that show the bonding between atoms
- 4. Measure of an element
- 7. High density,dutile, and high melting point.
- 8. Does not occur naturally on Earth
- 10. Consists of two atoms