I Do Crosswords PERIODICALLY

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Across
  1. 2. The charge of an atom with 6 protons and 2 electrons
  2. 6. Period of elements with atomic numbers 89-103 is the ____ Series
  3. 8. Group 1 metals
  4. 10. The number of protons in an atom is the ____ number
  5. 14. Element with 8 protons and 8 neutrons
  6. 15. Elements in the middle of the periodic table are the _____ metals
  7. 18. The element with the atomic number of 1
  8. 19. The abbreviated name for an element on the periodic table
  9. 20. Horizontal row on the periodc table
Down
  1. 1. A way of organizing elements on a chart is a _____ table
  2. 3. The mass of an element that has 17 protons and 13 neutrons
  3. 4. The sum of the protons and neutrons is the _____ number
  4. 5. Noble gases are found in Group ______
  5. 7. The group with three valence electrons
  6. 9. The symbol for the element with an atomic number of 79 is ___
  7. 11. Element with the atomic mass of 35.453
  8. 12. Element with 26 protons
  9. 13. Table salt is made up of Chlorine and ____
  10. 16. Information that is found at the top right of an element card
  11. 17. Vertical column on the periodic table