characteristics_elements

characteristics_elements - Characteristics of Selected...

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Unformatted text preview: Characteristics of Selected Elements Atomic Density of Crystal Atomic Ionic Mast Melting Atomic Weigh: Solid, 20°C Structure, Radius Radius Common Point Element S ymbgl Number __________ (grimy) (g/crnf) 20°61" _____ m (nm) (nnfl ________ W Valence ('°C) Aluminum Al 13 26.98 2.71 FCC 0.143 0.053 3 + 660.4 Argon Ar 18 39.95 —~ w A —— Inert — 189,2 Barium Ba 56 137.33 3.5 BCC 0.217 0.136 2+ 725 Beryllium Be 4 9.012 1.85 HCP 0.114 0.035 2" 1278 Boron l3 5 10.81 2.34 Rhomb. # 0.023 3 -- 2300 Bromine Br 35 79.90 —-— '4 4 0.196 1 + —7.2 Cadmium Cd 48 112.41 8.65 HCP 0.149 0.095 2* 321 Calcium Ca 20 40.08 1.55 FCC 0.197 0.100 2+ 839 1 Carbon C 6 12.011 2.25 Hex. 0.071 ~0.016 4+ (sublimes at 3367) if; Cesium Cs 55 132.91 1.87 BCC 0.265 0.170 1 ~ 28.4 Chlorine Cl 17 35.45 —— —— — 0.181 1+ — 101 Chromium Cr 24 52.00 7.19 BCC 0.125 0.063 3 + 1875 Cobalt Co 27 58.93 8.9 HCP 0.125 0.072 2-- 1495 Copper Cu 29 63.55 8.94 FCC 0.128 0.096 1 -~ 1085 Fluorine F 9 19.00 w — —— 0.133 1 — —220 Gallium Ga 31 69.72 5.90 Ortho. 0.122 0.062 3+ 29.8 Germanium Ge 32 72.64 5.32 Dia. cubic 0.122 0.053 4+ 937 Gold Au 79 196.97 19.32 FCC 0.144 0.137 1 + 1064 Helium He 2 4.003 4 -— — # Inert +272 (at 26 atm) Hydrogen H 1 1.008 —— w— # 0.154 1 + +259 Iodine I 53 126.91 4.93 Ortho. 0.136 0.220 1 — 114 Iron Fe 26 55.85 7.87 BCC 0.124 0.077 2+ 1538 Lead Pb 82 207.2 11.35 FCC 0.175 0.120 V 2+ 327 Lithium Li 3 6.94 0.534 BCC 0.152 0.068 1 + 181 Magnesium Mg 12 24.31 1.74 HCP 0.160 0.072 2-- 649 Manganese Mn 25 54.94 7.44 Cubic 0.1.12 0.067 2+ 1244 Mercury Hg 80 200.59 — 4 —— 0.110 2+ +388 Molybdenum Mo 42 95.94 10.22 BCC 0.136 0.070 4+ 2617 7 Neon Ne 10 20.18 4 — —— — Inert +2487 8 Nickel Ni 28 58.69 8.90 FCC 0.125 0.069 2+ 1455 Niobium Nb 41 92.91 8.57 BCC 0.143 0.069 5 —- 2468 Nitrogen N 7 14.007 — — - 0.01-0.02 5 + +2099 Oxygen O 8 1600 w- ~— — 0.140 2+ +2184 Phosphorus P 15 30.97 1.82 Ortho. 0.109 0.035 5 + 441 Platinum Pt 78 195.08 21.45 FCC 0.139 0.080 2+ 1772 Potassium K 19 39.10 0.862 BCC 0.231 0.138 1 + 63 Silicon Si 14 28.09 2.33 . Dia. cubic 0.118 0.040 4+ 1410 Silver Ag 47 107.87 10.49 FCC 0.144 0.126 1+ 962 Sodium Na 11 22.99 0.971 BCC 0.186 0.102 1 -- 98 Sulfur S 16 32.06 2.07 Ortho. 0.106 0.184 2+ 113 Tin Sn 50 118.71 7.27 Tetra. 0.151 0.071 4+ 232 Titanium Ti 22 47.87 4.51 HCP 0.145 0.068 4+ 1668 Tungsten W 74 183.84 19.3 BCC 0.137 0.070 4+ 3410 Vanadium V 23 50.94 6.1 BCC 0.132 0.059 5 + 1890 Zinc Zn 30 65.41 7.13 HCP 0.133 0.074 2+ 420 Zirconium Zr 40 91.22 6.51 HCP _ " 0.159 0.079 4+ W1852 Values of Selected Physical Constants Quantity Symbol SI Units cgs Units Avogadro’s number NA 6.023 X 1023 6.023 x 1023 molecules/mol molecules/mol Boltzmann’s constant k 1.38 x 10—23 J/atom-K 1.38 X 10*16 erg/atom—K 8.62 >< 10—5 eV/atom-K Bohr magneton MB 9.27 X 10‘24 A—mz 9.27 x 10—21 erg/gauss“ Electron charge 8 1.602 X 10“19 C 4.8 X 10“10 statcoulb Electron mass — 9.11 x 10W31 kg 9.11 x 1048 g Gas constant R 8.31 J/mol-K 1.987 cal/mol-K Permeability of a vacuum un 1.257 X 10”6 henry/m unity“ Permittivity of a vacuum 60 8.85 X 10""12 farad/m unityb Planck’s constant k 6.63 X 10—34 J-s 6.63 X 10727 erg—s 4.13 >< 10—15 eV-s Velocity of light in a vacuum c 3 X 108 m/s 3 X 1010 cm/s “ In cgs-emu units. b In cgs-esu units. Unit Abbreviations [ft = ampere in. = inch N = newton A = angstrom J = joule nm 2: nanometer Btu = British thermal unit K = degrees Kelvin P = poise C = Coulomb kg = kilogram Pa = Pascal 0C = degrees Celsius lbf 2 pound force s = second , cal = calorie (gram) lbm = pound mass T = temperature cm 2 centimeter m = meter um = micrometer eV = electron volt Mg 2 megagram (micron) °F = degrees Fahrenheit mm = millimeter W = watt ft = foot mol = mole psi = pounds per square g = gram MPa = megapascal inch 5: Multiple and Submultiple Prefixes Factor by Which Multiplied Prefix Symbol 109 giga G l 06 mega M 103 kilo k 10 ’2 centi“ c 10’3 milli m 10" 6 micro u 10A 9 name n 10' 12 pico p " Avoided when possible. ...
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characteristics_elements - Characteristics of Selected...

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