​Why do atoms form chemical bonds?

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• When atoms come together, they can react and form chemical bonds.

• ​Chemical bonds are the force of attraction that exists between atoms.

• ​The number of valence electrons that an atom has will determine if the atom will bond with atoms of other elements.

Chemical Bonding

• An atom is stable when its outermost energy level is fully occupied with 8 valence electrons.

• The octet rule is described below...

  Atoms will lose, gain or share electrons to achieve 8 valence electrons. (Helium is an acception to the rule. Helium is stable with 2 valence electrons.)

• Most elements in group 18 (Noble Gases) have 8 valence electrons. ​

  Therefore, these elements have stable atomic structures and will not form chemical bonds with other atoms.

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