Atomic Structure & The Periodic Table

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Across
  1. 1. the number of electrons in an atom is equal to the number of ________ in an atom
  2. 3. the number of protons in an atom is indicated by the _______ number of an element which can be found on the periodic table
  3. 5. all the columns in the "middle" section of the periodic table are called ___ _________
  4. 7. the total number of periods on the periodic table is _______
  5. 10. the number of valence electrons in an atom is equal to the ___ _______ number of the element on the periodic table
  6. 11. this subatomic particle has a positive charge
  7. 13. this subatomic particle has a negative charge
  8. 15. the total number of B-groups on the periodic table is _______
  9. 17. electrons in the outermost energy level of an atom are called ________ electrons
  10. 18. the overall charge of an atom is _______ because the number of positive charges is equal to the number of negative charges
  11. 19. the horizontal rows of the periodic table are called _________
Down
  1. 2. the center of an atom is called the _________
  2. 4. a Lewis dot diagram uses ______ around an element symbol to represent the valence electrons for an element
  3. 6. the vertical columns of the periodic table are called _________
  4. 8. the total number of A-groups on the periodic table is _______
  5. 9. this subatomic particle has a neutral charge
  6. 12. the element from the periodic table that is located in group 8A but only has 2 valence electrons is ______
  7. 14. the total number of groups on the periodic table is _______
  8. 16. any particle located in the nucleus of an atom can be referred to as a(n) _________