Electronegativity

Lewis Dot Symbol

Consists of the symbol of an element and one dot for each valence electron in an atom of the element

Valence Electrons

Outer shell electrons of an atom that participate in chemical bonding

Ionic Bond

Electrostatic force that holds ions togther in ionic compound; M and NM

Lattice Energy (U)

Energy required to completely seperate one mole of a sole ionic compound into gaseous ions

Lattice energy increases as _______ and/or as _______

Q increases; r decreases

Covalent Bond

Bond in which two valence electrons are shared by two atoms

Covalent Compounds

Compounds that contain only covalent bonds

Polar Covalent Bond

Covalent bonds with greater electron density around one of the two atoms

Electronegativity

Ability of an atom to attract toward itself the electrons in a chemical bond

Nonpolar Covalent Bonds

Share electrons, the difference between two elements in a bond is 0-0.4

Ionic Bonds

Have a compete transfer of electrons, the difference between two elements in a bond is 2 or greater