mia

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Across
  1. 3. on the right side of the periodic table
  2. 5. something that can be found in milk
  3. 7. vertical columns on a periodic table
  4. 11. inert gas
  5. 14. chemical symbol is TI
  6. 17. atomic weight is 11
  7. 18. on the left side of the periodic table
  8. 21. the atomic weight is 4
  9. 23. any group of rare gases
  10. 25. a family that has 5 electrons
Down
  1. 1. The number of protons in a nucleus
  2. 2. inert gas
  3. 4. gas in the periodic table
  4. 5. Number of protons and neutrons in a nucleus
  5. 6. a symbol which determines the chemical
  6. 8. has the atomic number of 5
  7. 9. metals that make up the first column (group) of the periodic table
  8. 10. something that has groups and periods
  9. 12. subatomic particle
  10. 13. average mass of an atom of an element
  11. 15. atomic weight of 7
  12. 16. chemical symbol is mg
  13. 19. substance composed of atoms with identical atomic number.
  14. 20. atomic weight is 1
  15. 22. A complex consisting of two atoms.
  16. 24. horizontal rows on a periodic table
  17. 26. the atomic weight is 56