CHEM 1A Chapter Notes -Lattice Energy, Lewis Structure, Vsepr Theory

• School: UC-Irvine
• Department: Chemistry
• Course: CHEM 1A
• Professor: Nien-hui Ge

Document Summary

Ionic compound o o consists of combination of cations and anions no molecular formula, only empirical because they cant exist alone (ex. Nacl) sum of cation and anion charges in each formula need to = 0 o: mass o amu - atomic mass unit. 1. 066054 x 10^-27: carbon is the "standard. Weighs 12 amu exactly: mass spectrometer. Measures an atom"s amu light atoms bend more, heavy atoms bend less o the mole. 1 mole of anything = 6. 022*10^23 units of that thing. Molar mass = how many grams are in 1 mole (g/mol) Ionic name of cation (+, usually metal) then the root of the anion (-, usually nonmental) +ide. Nacl - sodium chloride: covalent (molecular) prefix (if nonmetal) + full name of more metallic (left side) prefix (if nonmetal) + root of less metallic + ide (right side) o acid has an h.