Across
- 2. number of atoms in an element
- 4. A long molecule
- 6. The first word in Group zero's nickname
- 8. least reactive group one metal
- 9. lithium + ? --> lithium hydroxide + hydrogen
- 10. most reactive halogen
Down
- 1. The columns in the periodic table
- 3. The rows in the periodic table
- 5. Number of hydrogen atoms in methane
- 7. same number of these in an atom as the protons