Across
- 2. is a metal and its atomic number is 3.
- 4. a nonmetal, and in group 16 of the table.
- 5. the symbol of this element is Ar.
- 8. has 2,2 electrons per shell and its symbol is Be.
- 9. is solid at room temperature.
- 10. atomic number is 56.
Down
- 1. the symbol of this element is Zr with an atomic number of 40.
- 3. these make up water.
- 6. has 56 protons and electrons.
- 7. is a noble gas and is in Group 18.