Using the Periodic Table

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Across
  1. 2. Pb
  2. 5. Its atomic number is 13.
  3. 8. Sn
  4. 9. Its atomic number is 28.
  5. 15. Its atomic mass is 195.09.
  6. 16. Ag
  7. 17. K
  8. 18. It has an atomic number of 2.
  9. 19. Na
  10. 21. An inert gas with 18 electrons
  11. 22. Fe
Down
  1. 1. It is radioactive, soft, ductile, and named for a dwarf planet.
  2. 3. Hg
  3. 4. It has 5 electrons.
  4. 6. Its atomic number is 53.
  5. 7. It is a transition metal and is one of the main components of a modern-day penny.
  6. 10. Cu is its chemical symbol.
  7. 11. Its electrons form a 2-8-2 pattern regarding the energy levels in which they are found.
  8. 12. It is the lightest metal.
  9. 13. Its atomic mass is 32.06
  10. 14. Au
  11. 18. The lightest element
  12. 20. It has an atomic mass of 238.03.