Across
- 2. negatively charged ion
- 7. fluorine, chlorine, bromine, iodine, and astatine
- 10. line indicates the position of the metalloids in the periodic table
- 11. express large numbers as the product of only two numbers
- 12. mss in grams of one mole of a substance
- 14. outer shell electron
- 17. horizontal rows on the periodic table
Down
- 1. vertical column of the periodic table
- 3. rare gases that include helium, neon, argon, krypton, xenon.
- 4. eight valence electrons
- 5. number of proton in the nucleus of an atom
- 6. element that lacks characteristics of a metal
- 8. atom or molecule with an electrical net charge.
- 9. element that has metallic bonds
- 13. mass of an atom
- 15. positively charged ion
- 16. element that has properties of both metals and nonmetals