PhysChem

Chemistry

Bonding and Molecular Theory

Ion:

An atom or a group of atoms which has a nett electric charge

Ionic Bond:

The bond formed between 2 atoms when one atom takes an electron(s) completely, from the other resulting in a negative and positive ion which attreact one another

Covalent Bond:

The bond formed when 2 atoms share a pair of electrons

Dative Bond:

like a covalent bond but the shared pair of electrons were both contributed by the same atom

Electronegativity:

is a measure of attraction of an atom of that element for a shared pair of electrons

Hydrogen Bond:

when the hydrogen atom is bonded to a high electronegativity element. The hydrogen becomes slightly positive then the hydrogen bond is the bond between that hydrogen and slightly negative atom of the nett molecule

Dipole moment:

forces are forces of attraction between the negative pole of one molecule and the positive pole of another

Van der Waals:

forces are weak attractive forces between molecules resulting from formation of temporary dipoles

Metallic Bond:

bond between the cloud of valency electrons and the positive metal ions in the metal

Crystal:

a regular, solid, repeating structure of atoms, ions or molecules arranged in a lattice shape