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Periodic Table Notes. 1/14/14. Red stair step line separates metals from nonmetals Groups/families – vertical ↕ Have similar physical and chemical properties Periods – horizontal ↔ Periods do not have similar properties. Periodic Table Organization. Alkali metals – group 1A

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periodic table organization

Red stair step line separates metals from nonmetals

  • Groups/families – vertical ↕
    • Have similar physical and chemical properties
  • Periods – horizontal ↔
    • Periods do not have similar properties
Periodic Table Organization
periodic table organization1

Alkali metals – group 1A

    • 1 electron in outermost shell
    • Reacts violently with water
  • Alkaline Earth metals – group 2A
    • Produces bases in water
  • Transition Metals – Groups 1B to 8B
  • Inner transition metals – also called Rare Earth Elements
Periodic Table Organization
periodic table organization2

Halogens – Group 7A

    • 7 electrons in outermost shell
    • Very reactive nonmetals
  • Noble Gases – Group 8A
    • 8 electrons in outermost shell
    • Very stable, does not form compounds
Periodic Table Organization
metals

Conduct heat

  • Conduct electricity
  • Ductile
  • Malleable
  • Can be hard or soft
  • 3 or less valence electrons
  • Left side of red line

Sodium

Metals
nonmetals

Does not conduct heat well

  • Does not conduct electricity well
  • Solids are brittle
  • Most are gases at room temperature
  • 5 or more valence electrons
  • Right side of red line
Nonmetals

Nitrogen

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