Vocab 4

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Across
  1. 2. a collum of elements in the periodic table having similar valence electron arrangement, resulting in similar chemical properties; also known as a group
  2. 4. a row in the periodic table of the elements; also called a series
  3. 6. an element in group 18 on the periodic table having eight valence electrons that fill the outer energy level. (Helium is an exeption with only two.) With a full outer energy level, it is inert
  4. 8. the law that states that the properties of the elements very with their atomic numbers in a regular, repeated pattern
  5. 11. any electron in the outermost energy level of a neutral atom. Unpaired valence electrons are usually involved in chemical bonding
  6. 12. an element in group 17 of the periodic table having seven valence electrons. It easily gains an electron, forming a 1- anion, which causes it to be highly reactive
  7. 14. any of groups 13-16 in the periodic table; so named because they contain metals, nonmetals, and metalloids. These groups are often named for the first element in the family
Down
  1. 1. an element with characteristics between those of metals and nonmetals; also called semiconductors; located between metals and nonmetals on the periodic table
  2. 3. an element from either of two rows usually placed below the periodic table; a member of either the lanthanide or actinide series. It typically has two valence electrons
  3. 5. see family
  4. 7. an element in group 1 of the periodic table, having one valence electron that it can easily lose to form a 1+ cation, making it extremely reactive; the most reactive of all the metals
  5. 9. an element that is typically dense, solid, ductile, malleable, highly conductive, and chemically reactive, especially in the presence of nonmetal elements. Metals are located on the left end of the periodic table
  6. 10. an element that typically has four or more valence electrons and that does not exhibit the general proporties of metals; located on the right side of the periodic table
  7. 13. an element in group 2 of the periodic table, having two valence electrons that it tends to lose easily to become a 2+ cation, making it very reactive