Across
- 2. elements with properties that fall between those of metals
- 5. another name for columns in the periodic table
- 8. elements that form a bridge between the elements
- 9. arrangement of electrons in the orbital
- 12. possible energies that electrons can have
- 13. electron that is in the highest energy level
- 16. they have physical differences but similar chemical properties
- 17. extremely reactive, found in nature only in compounds
- 18. region around the nucleus
Down
- 1. soft enough to cut with a knife
- 3. the orbital of the first energy level
- 4. elements arranged into groups and rows by increasing the mass
- 6. pattern of repeating properties
- 7. colorless and odorless and extremely unreactive
- 10. good conductors of heat
- 11. poor conductors of heat
- 14. one isotope to serve as a standard
- 15. visual model of the most likely locations for electrons in an atom