CHM 131 Chapter Notes - Chapter 4: Covalent Bond, Chlorine, Fluorine

• School: University of Rochester
• Department: Chemistry
• Course: CHM 131
• Professor: Hafensteiner

Document Summary

Reactions in which one or more electrons are transferred are called oxidation- reduction reactions or redox reactions. For example: ch4(g) + 2o2(g) -> co2(g) + Even though there are no reactants or products that are ionic, the reaction still has a transfer of electrons from carbon to oxygen. Oxidation states/numbers: a way to keep track of the electrons in oxidation-reduction reactions and shows us how to divide up the shared electrons in compounds containing covalent bonds. **nonmetals with the highest attraction for the shared electrons are in the upper right- hand corner of the periodic table such as fluorine, oxygen, nitrogen and chlorine. Oxidation state of an atom in an element is zero. Oxidation state of each atom in the substances na(s), o2(g) is zero. The oxidation state of a monatomic ion is the same as its charge so oxidation state of the na+ ion is +1. Oxidation-reduction reactions are characterized by the transfer of electrons.