CHEM 1500 Lecture Notes - Lecture 15: Fluorine, Chlorine, Nonmetal

• School: York University
• Department: Chemistry
• Course: CHEM 1500
• Professor: Valeria Tsoukanova

Document Summary

Is a number (positive, negative or zero) Is related to electrons that an atom loses, gains, or otherwise appears to use in joining with other atoms in compounds. What os is for ionic vs. covalent bonds. For ionic bonds, (monoatomic ions, and formula units), os and charge mean the same thing. Because they"re made up of ions, which are charged as the result of gaining and losing electrons. The number = how many electrons are involved in the bond. The symbol = whether the atom lost or gained. For covalent bonds, (polyatomic ions, and molecules), os is fictional, but equal to what the charge would be if the compounds were entirely ionic. Because covalent bonds are made up of neutral atoms, there is no transfer of electrons, so they just. The number = how many electrons each atom contributes to the bond. The charge = which electron has a higher ability to attract the electrons (electronegativity)