Chemistry Periodic Table Crossword Puzzle

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Across
  1. 3. What block is Bk in.
  2. 6. All elements in the same group contain the same number of valence electrons.
  3. 7. What is a variation of a element called.
  4. 9. Has an average atomic mass of 10.811.
  5. 10. Number of protons is 26.
  6. 12. The staircase of elements that divides metals from non-metals.
  7. 13. Has 11 electrons.
  8. 14. This element has an atomic number of 1.
  9. 15. Organized based on which energy level and element places its valence electrons.
  10. 18. Average mass of 6.941.
Down
  1. 1. Has a symbol of Al.
  2. 2. Electrons found in the outer most energy level in an atom.
  3. 4. Has 6 electrons.
  4. 5. Has an average atomic mass of 20.180.
  5. 8. All elements in order to become energetically stable desire eight valence electrons.
  6. 9. Has a symbol of Be.
  7. 11. What defines the different types of isotopes in a element.
  8. 14. Has an element symbol of He.
  9. 16. Building blocks of chemistry and matter
  10. 17. Has 17 protons.