Key words

Ionic Bond

is the force of attraction between oppositely charged ions

Ion

charged atom or group of atoms

cation

positively charged ions

anion

negativley charged ion

D block element

element in which the highest energy sublevel that contains electrons is a d sublevel

a transition element

one that forms at least one ion with a partially filled d sublevel

Covalent Bond

the chemical bond formed when 2 atoms share a pair of electrons

Bond pairs

A pair of electrons involved in a covalent bond

Lone pair

Pairs of electrons that are not involved in bonding in a covalenty bonded compound

Molecule

Group of atoms that are chemically combined

Sigma Bond

Covalent Bonds where the orbitals overlap head on

Pi bonds

Covalent bonds where the orbitals overlap sidewise

Dative Covalent Bond

covalent bond where one atom donates both of the shared electron

Electronegativity

The relative attraction that an atom in a molecule has for the shared electrons

Polar Covalent Bond

A covalent bond where the electrons are unequally shared by the 2 atoms

Van der Waal Forces

weak attractive forces between molecules resulting in the formation of dipoles

Dipole-Dipole

Forces of attraction between the negative end of one molecule and the positive end of another