Chemical Bonding

Why Atoms Combine

• Atoms are not stable unless their valence orbital has a desired number of electrons.
• They combine to fill their outer orbital by sharing, giving, or taking electrons from other atoms.

Types of Bond Formation

• Transfer of one or more electrons from the valence shell of one atom to the valence shell of another atom.
• Sharing of one, two, or three electron pairs of valence shells between combining atoms.

Chemical Bond

• Provides the energy necessary to hold two different atoms together as part of a chemical compound.
• Strength of the bond depends on the molecules or atoms involved in the process of bond formation.

Formation of Chemical Substances

• Chemical Bond is the attraction between atoms that allows the formation of chemical substances containing two or more atoms.
• The type and number of electrons in the outer electronic shells of atoms or ions determine how atoms react with each other to form stable chemical bonds.

Bond Energy

• Strong or stable bonds require a lot of energy to be formed or broken.
• Weak bonds require less energy to be formed or broken.