CHEM 1110 Lecture Notes - Lecture 3: Roman Numerals, Sulfur Trioxide, Mass Spectrometry
15 Sep 2016
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Document Summary
Atomic mass mass of a single atom in atomic mass units (amu) Mass spectrometer instrument that can determine very accurate mass measurements and isotopic abundance. 63. 54 amu = 62. 9296 amu (x) + (64. 9278 amu (x+1)) 1. 3818 = -1. 9982x x= 0. 6915 69. 15% cu63. Periodic table: the atomic number increases as you go to the right and as you go down. Groups are vertical: 1a alkali metals, 2a alkaline earth metals, 6a chalcogens, 7a halogens, 8a noble gases. Molecules 2 or more atoms bonded together. Molecular compound composed of molecules that contain more than one type of atom. Ion: an atom gained or lost an electon. Cation (metals) positive formed, electron lost. Anion (nonmetals) negative formed, electron gained. They are trying to obtain noble gas configuration during this process. Polyatomic ions composed of more than 1 atoms. Ionic compounds compound that has bath positively and negatively charged ion. One oxidation state metal name + nonmetal w/ -ide.
