Unit 2 Chem Vocab

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Across
  1. 3. a chemical element in the d-block of the periodic table (groups 3-12)
  2. 5. having a valency of one
  3. 6. __ radius, the distance from the center of an atom's nucleus to the outermost electron shell
  4. 7. a group of six chemical elements in Group 2 of the periodic table
  5. 8. two words, patterns in the properties of chemical elements that emerge as you move across or down the periodic table
  6. 10. __ levels, the discrete, quantized states where electrons can exist within an atom
  7. 12. a series of 15 radioactive metallic elements in the periodic table, from atomic numbers 89 (actinium) to 103 (lawrencium)
  8. 14. a group of highly reactive nonmetallic elements in Group 17 of the periodic table
  9. 15. group of soft, shiny, highly reactive metallic elements found in Group 1 of the periodic table
  10. 16. the process where an atom or molecule gains or loses electrons/the energy required for electron loss
Down
  1. 1. __ electrons, the electrons in the outermost shell of an atom that are involved in chemical bonding
  2. 2. any in a series of elements of increasing atomic numbers beginning with lanthanum (57) or cerium (58) and ending with lutetium (71)
  3. 4. a chemical property that measure of how strongly an atom pulls on electrons when it's already bonded to another atom
  4. 9. an element or species that can form more than one type of ion or chemical bond
  5. 11. a group of unreactive, gaseous elements in Group 18 of the periodic table
  6. 13. the tendency of a substance to undergo a chemical reaction