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Phosphorus pentafluoride facts for kids

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Phosphorus pentafluoride
Phosphorus-pentafluoride-2D-dimensions.png
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IUPAC name Phosphorus pentafluoride
Other names Phosphorus(V) fluoride
Pentafluoridophosphorus
Pentafluorophosphorane
Identifiers
CAS number 7647-19-0
PubChem 24295
RTECS number TH4070000
Properties
Molecular formula
Molar mass 0 g mol-1
Appearance colourless gas
Density 5.527 g/cm3
Melting point
Boiling point
hydrolysis
Structure
Molecular shape trigonal bipyramidal
Dipole moment 0 D
Hazards
EU Index Not listed
Flash point Non-flammable
Related compounds
Other anions Phosphorus pentachloride
Phosphorus pentabromide
Phosphorus pentaiodide
Other cations Arsenic pentafluoride
Antimony pentafluoride
Bismuth pentafluoride
Related compounds Phosphorus trifluoride
Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa)

Phosphorus pentafluoride, also known as PF5, is a special chemical compound. It is made from the elements phosphorus and fluorine. At normal room temperature and pressure, it is a gas that you cannot see because it has no color.

What is Phosphorus Pentafluoride?

Phosphorus pentafluoride is a type of phosphorus halide. This means it is a compound where phosphorus is bonded to a halogen element, in this case, fluorine. It has a unique shape called a trigonal bipyramidal shape. Imagine two pyramids joined at their bases!

How is it Made?

This gas can be created when two other chemicals react together. One of these is OF2, and the other is phosphorus. When they meet, they combine to form phosphorus pentafluoride.

Cool Facts About PF5

  • It is a very light gas. Its density is about 5.527 grams per cubic centimeter.
  • It gets very, very cold before it turns into a liquid. Its melting point is around -93.78 degrees Celsius.
  • It boils and turns back into a gas at about -84.6 degrees Celsius.
  • It is not flammable, which means it will not catch fire easily.

Related Chemicals

Phosphorus pentafluoride has some chemical relatives. These include other compounds made from phosphorus and halogens, like Phosphorus pentachloride or Phosphorus pentabromide. There are also similar compounds where other elements like Arsenic pentafluoride or Antimony pentafluoride are bonded to fluorine.

See also

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