Page 818 - Fundamentals of Water Treatment Unit Processes : Physical, Chemical, and Biological

Appendix B: Physical Constants

and Physical Data

TABLE B.1
Standard Atomic Weights

Name Symbol Atomic Number Atomic Weight Name Symbol Atomic Number Atomic Weight
Actinium Ac 89 227 a Mercury Hg 80 200.59
Aluminum Al 13 26.981539 Molybdenum Mo 42 95.94
a
Americium Am 95 243 Neodymium Nd 60 44.24
Antimony Sb 51 121.760 Neon Ne 10 20.1797
a
Argon Ar 18 39.948 Neptunium Np 93 237
Arsenic As 33 74.92159 Nickel Ni 28 58.6934
Astatine At 85 210 a Niobium Nb 41 92.90638
Barium Ba 56 137.327 Nitrogen N 7 14.00674
Berkelium Bk 97 247 a Nobelium No 102 259 a
Beryllium Be 4 9.012182 Osmium Os 76 190.23
Bismuth Bi 83 208.98037 Oxygen O 8 15.9994
Boron B 5 10.811 Palladium Pd 46 106.42
Bromine Br 35 79.904 Phosphorus P 15 30.973762
Cadmium Cd 48 112.411 Platinum Pt 78 195.08
Calcium Ca 20 40.078 Plutonium Pu 94 244 a
a a
Californium Cf 98 251 Polonium Po 84 209
Carbon C 6 12.011 Potassium K 19 39.0983
Cerium Ce 58 140.115 Praseodymium Pr 59 140.90765
Cesium Cs 55 132.90543 Promethium Pm 61 145 a
Chlorine Cl 17 35.4527 Protactinium Pa 91 231.03588
Chromium Cr 24 51.9961 Radium Ra 88 226 a
Cobalt Co 27 58.93320 Radon Rn 86 222 a
Copper Cu 29 63.546 Rhenium Re 75 186.207
Curium Cm 96 247 a Rhodium Rh 45 102.90550
Dysprosium Dy 66 162.5 Rubidium Rb 37 85.4678
Einsteinium Es 99 252 a Ruthenium Ru 44 101.07
a
Erbium Er 68 167.26 Rutherfordium Rf 104 261
Europium Eu 63 151.965 Samarium Sm 62 150.36
Fermium Fm 100 257 a Scandium Sc 21 44.955910
Fluorine F 9 18.9984032 Selenium Se 35 78.96
Francium Fr 87 223 a Silicon Si 14 28.0855
Gadolinium Gd 64 157.25 Silver Ag 47 107.8682
Gallium Ga 31 69.723 Sodium Na 11 22.989768
Germanium Ge 32 73.61 Strontium Sr 38 87.62
Gold Au 79 196.96654 Sulfur S 16 32.066
Hafnium Hf 72 178.49 Tantalum Ta 73 180.9479
Hahnium Ha 105 262 a Technetium Tc 43 98 a
Helium He 2 4.002602 Tellurium Te 53 127.60
Holmium Ho 67 164.93032 Terbium Tb 65 158.92534
Hydrogen H 1 1.00794 Thallium Tl 81 204.3833
Indium In 49 114.818 Thorium Th 90 232.0381
Iodine I 53 126.90447 Thulium Tm 69 168.93421
Iridium Ir 77 192.217 Tin Sn 50 118.710
(continued)

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