The Periodic Table - Compounds and Molecules

Vocabulary flashcards based on key concepts related to covalent bonding, Lewis structures, and exceptions to the octet rule.

Covalent Bonding

The sharing of electrons between two atoms.

Lewis Dot Structures

Diagrams that show the bonding between atoms of a molecule and the lone pairs of electrons that may exist.

Coordinate Bonds

A type of covalent bond where both electrons in the bond come from one atom.

The Octet Rule

Atoms tend to form bonds until they are surrounded by eight valence electrons.

Resonance

The concept that some molecules can be represented by two or more valid Lewis structures.

Paramagnetic

Molecules with unpaired electrons that are attracted to a magnetic field.

Diamagnetic

Molecules with no unpaired electrons that are repelled by a magnetic field.

Formal Charge

A calculation to determine the charge of an atom in a molecule; calculated as V - L - ½B.

Multiple Bonds

Bonds in which two or more pairs of electrons are shared, such as double and triple bonds.

Exceptions to the Octet Rule

Certain molecules or atoms can violate the octet rule by having fewer or more than eight electrons in their valence shell.