Periodic Table

• Alkali metals

  • highly reactive
  • 1 excess electron they usually lose
  • +1 charge
• Halogens

  • highly reactive non-metals
  • lacks 1 electron they usually get from alkali metal(through bonding)
  • -1 charge
• Noble gases

  • non-reactive
  • highly stable
  • full outer shell of 8 electrons
• Metalloids

  • have metallic and non-metallic properties
• Non-metals

  • elements to the right of metalloids (plus hydrogen in group 1)
• Metals

  • elements to the left of metalloids (except hydrogen)
• Isotopes

  • atoms of same element with varrying number of neutrons