Covalent Bonding_Definitions Flashcards
Ball-and -Stick Model
A model that displays both the three dimensional position of the atoms and the bonds between them. The atoms are represented by coloured spheres that are connected by rods to represent the bodns.
Covalent Bond
The force of attraction formed when one or more pairs of electrons are shared between two nuclei
Diatomic Molecule
Amolecule formed from two atoms only
Double Covalent Bond
A covalent bond in which four electrons are shared
Electron Dot Diagram
A representation of the electron arrangement in a molecule in which outer-shell electrons are represented by dots or crosses
Intermolecular bond
The net forces of attraction that act between neighbouring molecules
Intramolecular bond
A force that holds the atoms within a molecule together
Lone pair
An outer electron pair that does not form a bond with other atoms
Molecular formula
A formula of a compound that gives the actual number and type of atoms present in a molecule. It may be the same as or different from the empiracal formula
molecule
A group of two or more atoms covalently bonded together, and representing the smallest fundamental unit of a chemical compound
Non-bonding electron
An outer-shell electron that is not shared between atoms
Polyatomic molecule
A molecule that consists of more than two types of atoms
Single covalent bond
A covalent bond in which two electrons are shared between two nuclei. It is depicted as a valence structure as a line between the two atoms involved
Tetrahederal shape
The shape of a molecule with a central atom surrounded by four other atoms. The bond angle between two outer atoms and the central atom is 109.5 degrees
Triple covalent bond
A covalent bond in which six electrons are shared between two nuclei. It is depicted in a valance structure as three lnes between the two atoms involved
