Chemical species

These entities are classified through bonding types and relative abundance of isotopes.

These energy levels determine the way the chemical species will interact with others through properties such as bonding or isotopic compositions.

[3] These types of bonds can determine the physical property of chemical species in a liquid or solid state.

[4] The term is also applied to a set of chemically identical atomic or molecular structures in a solid compound.

[5] Molecular species: Groups of atoms that are held together by chemical bonds.