CHEM 1211 Lecture Notes - Lecture 4: Photon, Formal Charge, Electronegativity
9 Nov 2017
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Practice problems: 4. 1-4. 3, 4. 11-4. 27, 4. 29-4. 31, 4. 41, 4. 42, 4. 44, 4. 47, 4. 55. Chemical bonds: molecular interactions with electromagnetic radiation, three types of chemical bonds. What is the hardest to break: higher charges, smaller distance between the molecules (which you can tell by size of molecules, polyatomic ions. 2- (sulfate), no3: so4, na3po4, mgso4, ca3(po4)2, all cations would bond with them, will combine either with another polyatomic ion or with a single. Ionic bonds (two opposite charges) cation (metal) loses electrons and anion (nonmetal) gains them. * name of cation + beginning of anion + ide. * if charge could vary for cation, add roman numeral. * group 1 and group 2 metals always form ionic bonds with the nonmetals in group 6a (o and s) and. * far right have a higher tendency to combine. Lewis symbols and lewis structures: gilbert lewis proposed atoms form bonds by sharing pairs of electrons which mimics outershell electron configurations of noble gases.
