periodic table
Across
- 5. This element has 42 electrons.
- 6. This element is a nonmetal and it has 18 electrons.
- 9. This element is a metal and its element symbol is Au
- 10. This element symbol is O.
- 11. This element is a transition metal and it has 22 protons.
- 13. This element has 88 protons.
- 14. This element has an atomic number of 65.
Down
- 1. This element's atomic number is 89.
- 2. This element is a metalloid and it has 6 neutrons.
- 3. This element is number 1 in the periodic table.
- 4. This element has 10 protons.
- 7. This element has 81 neutrons.
- 8. This element has 23 electrons.
- 12. This element family is 4 and the period 8.