Encyclopedia > Polyatomic molecules

  Article Content

Polyatomic molecule

Redirected from Polyatomic molecules

Polyatomic molecules are molecules in chemistry that consist only of atoms of a single element. Most are nonmetals; in fact, most nonmetals form polyatomic molecules. The majority are diatomic. These elements are so reactive that they will bond with themselves if they cannot bond with anything else. Do not forget that these elements may exist as atoms in other compounds!

These are the most widely accepted polyatomic molecules:

  • H2
  • N2
  • O2, O3 and O4 (O3 is also known as ozone, and O4 spontaneously decomposes into the diatomic form)
  • F2
  • Cl2
  • Br2
  • I2
  • At2 (theoretically; this element's compounds have not been investigated because of its radioactivity)

  • S8
  • P4 Because these two elements can (at least in theory) form complex macromolecules with endless numbers of atoms in them, they can also be considered polyatomic molecules.

  • Cx
  • Six (highly unstable) These two do not actually come in varieties with a predictable number of atoms, so an x is used. For silicon and carbon, the 2 molecule form is explosively unstable (because a quadruple covalent bond is unstable because of the bending of orbitals), so the only form would be either some complex lattice (eg. a diamond) or a cycloalkene[?] or cyclosilene[?] with only double bonds, or some other form with alternating single and triple bonds.



All Wikipedia text is available under the terms of the GNU Free Documentation License

 
  Search Encyclopedia

Search over one million articles, find something about almost anything!
 
 
  
  Featured Article
Canadian Charter of Rights and Freedoms

... British model of Parliamentary supremacy. Ironically, some would say that the European Convention on Human Rights has now limited British parliamentary power to a greater ...

 
 
 
This page was created in 28.6 ms