Across
- 2. Helium
- 7. Elements in group 18 of the periodic table
- 10. Elements in group three through twelve of the periodic table
- 12. Very malleable element
- 13. Magnesium ion has what charge
- 14. Elements in group on the periodic table from lanthanum to lutetium
- 17. Arranged elements in order of increasing atomic number
- 19. Poor conductors of heat
- 22. elements with properties intermediate between metals and nonmetals
- 23. Sodium ion has what charge
- 24. Elements in group two of the periodic table
Down
- 1. Essentially nonreactive
- 3. Elements in group one of the periodic table
- 4. Elements in group 15 on the periodic table from actinium to lawrencium
- 5. Alkali metal in period four
- 6. First person who developed a periodic table by increasing atomic mass
- 8. Transition metal in period six, group six
- 9. Diagram that uses dots and lines
- 11. Metalloid in period three
- 15. Who made the first periodic table
- 16. Florine Ian has what charge
- 18. React with water from bases
- 20. Highly reactive,non-metalic metals in group 17 of the periodic table
- 21. Outermost electrons of an atom