|Theoretical chemistry deals in providing explanations to chemical and physical observations. Theoretical chemistry includes the fundamental laws of physics Coulomb's law, Kinetic energy, Potential energy, the Virial Theorem, Planck's Law, Pauli exclusion principle and many others to explain but also predict chemical observed phenomena. The term quantum chemistry which comes from Bohr's quantized model of electron in the atom, applies to both the time independent SchrÃ¶dinger and the time dependent Dirac formulations. Chemical Sciences journal is among the Top journals in Theoretical chemistry. The journal encourages authors to take advantage of the opportunities offered by electronic publishing and maintains an internet archive for the viewing, storage, and downloading of supplementary material for papers published in Chemical Sciences journal. The top journals are peer reviewed scholarly journals. These provide high quality, meticulously reviewed and rapid publication, to cater the insistent need of scientific community. These journals are indexed with all their citations noted. The top open access journals are indexed in MEDLINE, PUBMED, SCOPUS, COPERNICUS, CAS, EBSCO and ISI.