Periodicity Vocabulary

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Across
  1. 1. number of valence electrons in group 15
  2. 4. number of valence electrons in group 2
  3. 7. name for group 18 on the periodic table
  4. 11. number of valence electrons in group 1
  5. 12. the relative attraction of an atom for a shared pair of electrons in a covalent bond
  6. 14. name for group 17 on the periodic table
  7. 17. number of protons in the nucleus
  8. 20. distance from the nucleus to the valence electrons for neutral atoms, measured in pm
  9. 22. elements on the periodic table are organized by increasing ___
  10. 24. horizontal rows on the periodic table that relate to energy levels
  11. 25. name for group 2 on the periodic table
  12. 26. number of valence electrons in group 18
  13. 27. electrons in the outermost energy level
Down
  1. 1. the amount of energy required to remove the first valence electron from an atom in the gas state, in kJ/mol
  2. 2. name for groups 3-12 on the periodic table
  3. 3. number of valence electrons in group 14
  4. 5. found along the stair step line, have intermediate properties
  5. 6. found on the right side of the periodic table, act as anions
  6. 8. vertical columns on the periodic table that share similar properties
  7. 9. core electrons block valence electrons from the nucleus, reducing nuclear charge
  8. 10. distance from the nucleus to the valence electrons for an ion, measured in pm
  9. 13. number of valence electrons in group 13
  10. 15. name for group 1 on the periodic table
  11. 16. number of valence electrons in group 16
  12. 18. inner electrons
  13. 19. the amount of energy required to remove a valence electron from an ion with a -1 charge in the gas state, in kJ/mol
  14. 21. number of valence electrons in group 17
  15. 23. found on the left side of the periodic table, act as cations