Lead oxide

Lead oxides are a group of inorganic compounds with formulas including lead (Pb) and oxygen (O).

Common lead oxides include:

• Lead(II) oxide, PbO, litharge (red), massicot (yellow)
• Lead tetroxide or red lead, Pb
  3O
  4, minium, which is a lead (II,IV) oxide and may be thought of as lead(II) orthoplumbate(IV) [Pb²⁺]
  2[PbO4−
  4], vivid orange crystals
• Lead dioxide (lead(IV) oxide), PbO
  2, dark-brown or black powder

Less common lead oxides are:

• Lead sesquioxide, Pb
  2O
  3, which is a lead (II,IV) oxide as well (lead(II) metaplumbate(IV) [Pb²⁺][PbO2−
  3]), reddish yellow
• Pb
  12O
  19, monoclinic, dark-brown or black crystals
• The so-called black lead oxide, which is a mixture of PbO and fine-powdered Pb metal and used in the production of lead–acid batteries.

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