Metals, Nonmetals, and Metalloids Aim PT3

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Metals, Nonmetals, and MetalloidsAim PT3
what makes something a metalloid?
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• Metals
• 2/3 of the Periodic Table are metals
  on the left side of periodic staircase
• Metallic Characteristics
• Metals have specific properties
  due to the sea of mobile electrons that
  surround them
• Solids with the exception of Hg
• Luster ability to reflect light
• Conductivity ability to carry electricity or
  heat through them
• Malleability ability to be pounded flat or bent
• Ductility ability to be drawn into a wire

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• Other Metal Characteristics
• Due to having few electrons in valence shell
• Low electronegativities
• do not seek electrons
• Looking to lose and have 8 in valence shell
• Low ionization energies
• small number of valence electrons
• easier to remove
• Larger atomic radius compared to nonmetals

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• Non-metals
• Lack luster
• dull in appearance
• Many are gases
• Noble gases, H, N, O, F, Cl
• One nonmetal liquid - Br
• Poor conductors of electricity and heat
• Brittle in solid phase
• Not malleable or ductile
• High electronegativity seeks to fill valence
  shell with electrons
• High ionization energy will not lose electron
  easily

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• Metalloids
• On the dividing line or
  staircase of Periodic Table
• Metalloids have some characteristics of
  both metals and nonmetals
• On staircase B, Si, As, Te, At, Ge, Sb, Po
• Example Silicon
• Conducts electricity (in silicons case, it is a
  semiconductor)
• Have luster, metallic looking
• But highly brittle