Chapter2

Chapter2 - Announcements Chem 6A Sept 27, 2011 Course is...

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Chem 6A Michael J. Sailor, UC San Diego Announcements Chem 6A Sept 27, 2011 Course is being podcast: http://podcast.ucsd.edu/podcasts Course web link is: http://sailorgroup.ucsd.edu/Chem6A_sailor/ Links should be available on courses.ucsd.edu and ted.ucsd.edu shortly 1 Chem 6A Michael J. Sailor, UC San Diego Chapter 2: Matter 2
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Chem 6A Michael J. Sailor, UC San Diego 3 Properties of sub-atomic particles Name Symbol Charge* Mass, g Electron e- -1 9.1 x 10 -28 Proton p +1 1.673 x 10 -24 Neutron n 0 1.675 x 10 -24 *units are fundamental unit of charge, = 1.602 x 10 -19 coulombs Chem 6A Michael J. Sailor, UC San Diego The Periodic Table of the Elements 4 1 18 1 2 H 2 13 14 15 16 17 He 1.0079 4.0026 3 4 5 6 7 8 9 10 Li Be B C N O F Ne 6.941 9.01218 10.811 12.011 14.0067 15.9994 18.9984 20.1797 11 12 13 14 15 16 17 18 Na Mg 3 4 5 6 7 8 9 10 11 12 Al Si P S Cl Ar 22.9898 24.305 26.9815 28.0855 30.9738 32.066 35.4527 39.948 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 K Ca Sc Ti V Cr Mn Fe Co Ni Cu Zn Ga Ge As Se Br Kr 39.0983 40.078 44.9559 47.88 50.9415 51.9961 54.9381 55.847 58.9332 58.69 63.546 65.39 69.723 72.61 74.9216 78.96 79.904 83.8 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 Rb Sr Y Zr Nb Mo Tc Ru Rh Pd Ag Cd In Sn Sb Te I Xe 85.4578 87.62 88.9059 91.224 92.9064 95.94 98.9063 101.07 102.906 106.42 107.868 112.411 114.82 118.71 121.75 127.6 126.905 131.29 55 56 57 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 Cs Ba La Hf Ta W Re Os Ir Pt Au Hg Tl Pb Bi Po At Rn 132.905 137.327 138.906 178.49 180.948 183.85 186.207 190.2 192.22 195.08 196.967 200.59 204.383 207.2 208.98 208.982 209.987 222.018 87 88 89 104 105 106 107 108 109 Fr Ra Ac Unq Unp Unh Uns Uno Une 223.02 226.025 227.028 - - - - - - 58 59 60 61 62 63 64 65 66 67 68 69 70 71 Lanthanides Ce Pr Nd Pm Sm Eu Gd Tb Dy Ho Er Tm Yb Lu 140.12 140.91 144.24 146.92 150.35 151.96 157.25 158.92 162.5 164.93 167.26 168.93 173.04 174.97 90 91 92 93 94 95 96 97 98 99 100 101 102 103 Actinides Th Pa U Np Pu Am Cm Bk Cf Es Fm Md No Lr 232.038 231.04 238.03 237.05 239.05 241.06 247.07 249.08 251.08 254.09 257.1 258.1 255 262.1
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Chem 6A Michael J. Sailor, UC San Diego 5 3 key experiments leading to the modern view of the atom Person Experiment What it determined J.J. Thomson 1897 Effect of a charged plates on a cathode ray tube mass/charge ratio of an electron, m e /z e Robert Millikan 1909 Oil-drop experiment: suspending a charged drop of oil between charge on the electron, z e Ernest Rutherford 1910 Scattering of alpha-rays from metal foils Atom consists of a very small, very dense nucleus Chem 6A Michael J. Sailor, UC San Diego
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Chapter2 - Announcements Chem 6A Sept 27, 2011 Course is...

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