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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 notes

Periodic Table Notes

1/14/14


Periodic table organization

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


Metalloids

Boron

Metalloids


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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