Atoms

Cards (28)

  • electron shell goes 2-8-8...
  • Atomic number = # of protons
  • 1 proton is equal to 1 atomic weight
  • Halogens -Extremely reactive non-metals
  • Alkaline Earth Metals - second most reactive metals
  • Noble gases - non reactive fellas.
  • Vaence Shell - Outer shell
  • Reactions only occur with the valence shell
  • Valence Shells want stability either 8 or 2 ring or 8 or 2 total
  • Protons attract electrons
  • the farther electrons are from nucleus the weaker their bond
  • Bigger metals are more reactive and loose electrons
  • Smaller non-metals are more reactive and steal electrons
  • Atoms share electrons rather than give them away
  • Cation - +
  • Anion - -
  • You must round up the atomic weight to find the # of electrons
  • Alkali - Metals, Reactive, one valence electron
  • Alkalaine - Metals, Reactive, 2 valence electrons
  • Halogens - Reactive, non metals, 7 valence electrons
  • Noble gases - No reaction, Full valence shell
  • More electrons makes atom squeeze
  • The further elements to the right, the smaller they are in radius
  • Metals get rid of electrons
  • Non-metals steal electrons
  • Number of Electrons change in Ions
  • Lewis dot diagrams - Name + dots around
  • 2NA = The two means DOUBLE IT