The Modern Periodic Table (from a Physical Science 11 textbook)

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Across
  1. 6. element that belongs to Group 3A and Period 2
  2. 8. Sanskrit word that means "first"
  3. 9. elements found in the shorter columns of the periodic table aka B groups
  4. 10. particles found in the nucleus aside from neutrons
  5. 12. classification of elements that exhibit properties of both metals and nonmetals
  6. 14. elements found in the longer columns of the periodic table aka A groups
  7. 16. first element in Group 5A
  8. 19. horizontal arrangement of elements in the periodic table
  9. 20. another term for the horizontal arrangement of elements in the periodic table
Down
  1. 1. collective name for the elements in Group 7A
  2. 2. classification of elements that tend to form cations
  3. 3. number of electrons in the outermost shell of a carbon atom
  4. 4. vertical arrangements of elements in the periodic table
  5. 5. first element in the periodic table
  6. 7. Russian chemist who proposed the arrangement of elements based on increasing atomic masses
  7. 10. word that describes the repeating patterns of physical and chemical properties of elements
  8. 11. collective name for the elements with atomic numbers 58 to 71
  9. 13. an atom or group of atoms that has a net positive or negative charge
  10. 15. English chemist who proposed the law of octaves
  11. 17. first word of the collective name for the elements in Group 8A
  12. 18. term used for the electrons in the outermost shell of an atom