Glossary of Chemistry Vocabulary Chapter 12 World of Chemistry

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Force that holds groups of 2+ atoms together and makes them function as a unit
Bond Energy
Energy required to break the bond
Ionic Bonding
Closely packed opposite charged ions
Ionic Compound
Metal reacts with nonmetal
Covalent Bonding
Electrons shared by nuclei
Polar Covalent Bond
Unequal sharing of electrons
Relative ability of an atom in a molecule to attract shared electrons
Dipole moment
Center of positive charge and center of negative charge
Lewis Structure
Representation of a molecule that shows how the valence electrons are arranged among the atoms in the molecule
Duet rule
Hydrogen shares two electrons
Octet Rule
Each atom surrounded by eight electrons
Bonding Pair
Two valence electrons shared with the other atom
Lone Pair
Pairs of electrons not involved in bonding
Single Bond
Two atoms sharing one electron pair
Double Bond
Two atoms sharing two pairs of electrons
Triple Bond
Three electron pairs are shared
More than one Lewis structure can be drawn for the molecule
Molecular/Geometric Structure
3D arrangement of the atoms in the molecule
Linear Structure
In a line
Trigonal Planar
All on the same plane
The structure around a given atom is determined by minimizing repulsions between electron pairs
Trigonal Pyramid
Lone pair

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