Why do bonds form?
to have lowest energy possible
FA = RF
Why does bond type matter?
if you know bond type, you know something about the compound
Polar Covalent Bond
2 nonmetals
H + nonmetal
forms a molecule
Nonpolar Covalent
2 atoms of same element
forms a metal
Ionic
metal + nonmetal
forms crystal lattice
Bond Energy
energy to BREAK a bond
Definition: Ionic
electrostatic attraction between oppositely charged ions
Definition: Covalent
e- pairs shared between atoms
Definition: Metallic
collective sharing of a sea of valence e- between several metal ions
Covalent Bond Energy
as bond # goes up, bond length goes down and bond energy goes up
Ionic Bond Energy
bond forming - exothermic (products)
bond breaking - endothermic (reactants)
Hybridization
Ionic bonds DO NOT Hybridized
