Terminology
used in describing Lewis structures of molecules
Bond pairs: An electron pair shared by two
atoms in a bond.
Lone pair:
An electron pair found solely on a single atom.
Single covalent bond -
Bond between two atoms when they
shared 1 pair
Double covalent bond –
Bond between two atoms when they
shared 2 pairs.
Triple covalent bond –
Bond between two atoms when they
shared 3 pairs.
Lewis Structure, Stability,
Multiple Bonds, and Bond Energies
Bond order
The stability of a covalent compound is related to the
bond energy.
The magnitude of the bond energy increases
and the bond length
decreases in the order: single bond > double bond > triple
bond.
Bond Energy order: single < double <
triple
Bond length
order: single (1)
< double (2) < triple (3)