The Periodic Table

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Across
  1. 3. Ar 18
  2. 4. number what its arranged by
  3. 6. Ba 56 0.89
  4. 7. As 33 2.18
  5. 10. the property of transmitting heat, electricity, or sound
  6. 12. Am 95 1.3
  7. 16. Sb 51 2.05
  8. 17. At 85 2.2
  9. 18. Al 13 1.61
  10. 19. Be 4 1.57
Down
  1. 1. a horizontal row in the periodic table
  2. 2. the property of an atom that causes it to have weight
  3. 5. Bk 97 1.3
  4. 8. describes how likely an element is to form bonds with other elements
  5. 9. any of the monovalent metals of group I of the periodic table (lithium or sodium or potassium or rubidium or cesium or francium)Actinium Ac 89 1.1Actinium Ac 89 1.1
  6. 11. atom with same atomic number, different number of neutrons
  7. 12. quantity of protons in the nucleus of an atom of an element
  8. 13. a vertical column in the periodic table
  9. 14. 7 element groups
  10. 15. Bi 83 2.02