Changes

A bond between two [[atom]]s that involves four [[electron]]s.

A ''double bond'' is a [[chemical bond]] between two [[atom]]s which involves four [[electron]]s.

An example of the double bond is the bond between the carbon atoms in the ethylene molecule, which is represented schematically by:

An example of the double bond is the bond between the [[carbon]] atoms in the [[ethylene]] molecule, which is represented schematically by:

[[Image:Double_bond.jpg]]

[[Image:Double_bond.jpg]]