In a single bond one pair of electrons is shared, with one electron being contributed from each of the atoms. Double bonds share two pairs of electrons and triple bonds share three pairs of electrons. Bonds sharing more than one pair of electrons are called multiple covalent bonds.
Covalent bonds can be single, double, and triple bonds. Single bonds occur when two electrons are shared and are composed of one sigma bond between the two atoms. Double bonds occur when four electrons are shared between the two atoms and consist of one sigma bond and one pi bond.
When a bond forms it needs 2 electrons to share in a covalent bond we need two electrons that are being shared between the two atoms and when we have single covalent it means just one bond between two atoms and it means only two electrons are being shared.
Triple bonds occur when six electrons are shared between the two atoms and consist of one sigma bond and two pi bonds (see later concept for more info about pi and sigma bonds).
Sharing of three electron pairs between two atoms results in the formation of a triple bond.
Two electrons are shared in 1 single covalent bond. Two pairs or four electrons are shared in a double covalent bond. Describe ionic bonding. Ionic bonding involves a complete transfer of one or more electrons from one atom to another; this process forms metal cations and nonmetal anions.
A double covalent bond is a covalent bond formed by atoms that share two pairs of electrons.