Rafidain Journal of Science (RJS) is a scientific and open access journal Publishing under the license of Creative Commons Attribution 4.0 International (CC-BY), this journal is published quarterly issues by the College of Science, University of Mosul, Iraq. We are using iThenticate to prevent plagiarism and ensure our submitted manuscripts' originality. A double-blind peer-reviewing system uses to assure the publication's quality.RJS publishes original articles, review papers in the field of Chemistry, Physics and Biology. This journal has been indexed in IASJ . RJS requires a 100 US$ fee for publishing an accepted manuscript. Any governmental or non-governmental organization does not financially support the journal. The authors will retain full copyright with unconstrained publishing rights.