CHEM 111 Lecture Notes - Electric Potential, Covalent Bond, Nonmetal

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10 Mar 2014
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Must know 1st 4 periods of the periodic table. Which ordering of species from smallest radius to largest radius is more likely correct: au3+ < ba2+ < cs < i- < cs+ I- < cs+ < cs < ba2+ < au3+ I- < au3+ < ba2+ < cs+ < cs: au3+ < ba2+ < cs+ < i- < cs, cs < cs+ < au2+ < ba2+ < i- We know cs+ < cs not a or e. We know ba2+ < cs+ not b. We know i- > cs+ not c. Therefore, d, even if we"re not sure about au3+ Only the noble gases exist without any bonds. Even pure substances, like oxygen or sulfur, have bonds. Bonding lowers the energy of the atoms involved. Atoms tend to have charges (+ or -, or + and -) Electrostatic potential tells us a small distance is lower energy. Bonds are categorized by the position of the atoms on the periodic table.