Across
- 2. examples: helium, neon, argon, krypton, xenon, and radon,
- 3. solid material, shiny, hard, fusible, ductile
- 6. same number as protons and nutrons
- 7. abreviation of an element on the P.T.
- 8. numbered row
- 10. person who created the P.T.
Down
- 1. electrical semiconductors
- 2. substance that isn't a metal
- 4. number of protons
- 5. each column in the P.T.
- 9. has a atomic number, protons and electrons