Nonmetals and Metalloids on the Periodic Table

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Nonmetals and Metalloids on the Periodic Table
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Location, Location, Location

• Nonmetals are found to the right of the zigzag
  (stairstep) line on the periodic table.

Zigzag or stair step line
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Properties

• Nonmetals are described by their physical and
  chemical properties.
• Physical Properties dullness, brittle (break
  easily), poor conductors, low density, most are
  gases at room temperature low boiling point
• Chemical Properties easily form compounds
  (except group 18) with metals, like NaCl, and
  other nonmetals, like O2, which is called a
  diatomic molecule, or another nonmetal, like CO2

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Families of Nonmetals

• Carbon group 14 ev4 C is the only nonmetal
• Nitrogen group 15, ev5 N and P are the only
  nonmetals
• Oxygen group 16 ev6 O, S and Se are the only
  nonmetals
• Halogen group 17 ev7 very, very reactive
  very dangerous very helpful almost always found
  in a compound
• Noble Gases group 18 ev8 do not form
  compounds very stable and unreactive
• Hydrogen 1p ev1 0n usually found in
  compouds

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Metalloids

• Metalloids are found on either side of the zigzag
  or stairstep line, forming the border between
  metals and nonmetals.
• Includes B, Si, Ge, As, Sb, Te, and At
• Some are used as semiconductors. Semiconductors
  are elements that can conduct electricity under
  specific situations, like temperature, light
  exposure, or impurities.