define and describe covalent bonding and coordinate (dativecovalent) bonding

Covalent Bonding: Covalent bonding is a type of chemical bonding where pairs of electrons are shared between atoms. This type of bonding occurs between non-metal atoms which have similar electronegativities. They share electrons in order to achieve a stable electron configuration, usually a full outer shell of electrons, which is most stable.

Here are the steps to describe covalent bonding:

1. Two non-metal atoms come close together.
2. They share a pair of electrons to form a covalent bond.
3. This sharing allows each atom to achieve a full outer shell of electrons, making them more stable.
4. The bonded atoms form a molecule.

Coordinate (Dative Covalent) Bonding: Coordinate bonding, also known as dative covalent bonding, is a special type of covalent bonding. In this type of bonding, both electrons in the shared pair come from the same atom.

Here are the steps to describe coordinate bonding:

1. A molecule or ion with a lone pair of electrons comes close to an atom or ion that needs two electrons to achieve a stable configuration.
2. The molecule or ion donates its lone pair of electrons to form a bond with the atom or ion in need.
3. This forms a coordinate bond, where both electrons in the bond come from the same atom.
4. The resulting structure is more stable.

In both types of bonding, the goal is to achieve a more stable electron configuration. The difference lies in where the electrons in the shared pair come from. In covalent bonding, one electron comes from each atom. In coordinate bonding, both electrons come from the same atom.