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15 Cards in this Set

  • Front
  • Back
main group elements
predictable properties, A columns, tall columns on sides of chart
transitional elements or transitional metals
properties less predictable than main group, B columns
each column of periodic table makes up a/an
family or group with similar properties
what is group 8a
noble gases, chemically inert, helium
what is group 1a
alkali metals, highly reactive
what is group 2a
alkaline earth metals, fairly reactive, calcium
what is group 7a
halogens, highly reactive non=metals, chlorine
ion charge formula
number of protons - number of electrons
negatively charged ions
anions (onions make you cry)
positively charged ions
cations (cheshire cat)
lose electrons (shiny and fall off), most elements, good conductors, malleable, ductile, shiny, iron
gain electrons from metals, upper right corner of p. table, separated by diagonal zigzag, can be solid or gas, poor conductors, oxygen
semi-conductors, semi-metals, zigzag line, intermediately and controllably conductive, silicon
valence electrons
shown by number 1 - 8 on main group column headers except helium
predicting charge aquired when elements ionize
main group elements form ions with the same number of valence electrons as the nearest noble gas