0 1 3 2 5 4 7 6 9 8 10 11 -11 2 -2 1.602 176 6208·10 101 325 Pa -19 C -1 Molar gas constant ................ 8.314 4598 J mol K Pi ........................................... 3.141 592 653 589 793... -34 Planck constants ................... 6.626 070 040·10 J s Na Metal Mg Cs Noble gas Ba Ne - gas Hg - liquid © 2017 Eni Generalić 57 La 58 Ce 59 Pr 60 61 Nd Fr Ra Ac (223) (226) (227) Th Pa U 232.04 231.04 238.03 62 Pm Sm 63 Eu 64 Gd 3 IIIB 4 IVB 5 23 21 22 Sc STANDARD STATE (25 °C; 101 kPa) Actinide www.periodni.com 132.91 137.33 138.91 140.12 140.91 144.24 (145) 87 88 89 93 90 91 92 7 Halogens element Transition metals Lanthanide Sr 85.468 87.62 55 56 6 Chalcogens element Alkaline earth metal Ca 39.098 40.078 37 38 Rb Alkali metal 65 Tb 66 Dy Fe - solid Tc - synthetic 67 Ho 68 Er 69 Tm Ti SYMBOL 1 1.0079 VB 6 VIB 7 VIIB 8 25 26 24 V Cr Mn Fe VIIIB 9 10 27 28 Co Ni Al 11 29 IB 12 30 Cu Y Yb Zr Nb Mo Tc 88.906 91.224 92.906 95.96 (98) 73 72 74 75 71 Lu Hf Ta W Re Ru Rh Pd Ag C Zn Si Cd Ga Ge 69.723 72.64 49 50 In Os Ir Pt Au Hg Tl Np Pu Am Cm Bk Cf Es Fm Md No Lr Rf Db Sg Bh Hs Mt Ds Rg Cn Nh (244) (243) (251) (252) (257) (259) (262) (267) (268) (271) (272) (277) (276) (281) (280) (285) (258) O F Ne P S Cl Ar Sn As Se 74.922 78.96 51 52 Sb Te Br Kr 79.904 83.798 53 54 I Xe 101.07 102.91 106.42 107.87 112.41 114.82 118.71 121.76 127.60 126.90 131.29 83 76 77 78 79 80 81 82 84 85 86 (237) (247) N IIB 26.982 28.086 30.974 32.065 35.453 39.948 31 32 33 34 35 36 Pb 150.36 151.96 157.25 158.93 162.50 164.93 167.26 168.93 173.05 174.97 178.49 180.95 183.84 186.21 190.23 192.22 195.08 196.97 200.59 204.38 207.2 104 107 109 110 105 106 111 112 113 114 103 94 95 96 97 98 99 100 101 102 108 (247) VA 16 VIA 17 VIIA 4.0026 8 9 10 IVA 15 7 10.811 12.011 14.007 15.999 18.998 20.180 13 15 16 17 18 14 RELATIVE ATOMIC MASS 44.956 47.867 50.942 51.996 54.938 55.845 58.933 58.693 63.546 65.38 39 43 40 45 46 47 48 41 42 44 70 IIIA 14 6 B H 1 PERIOD 13 5 IA 1 Nonmetal Semimetal He GROUP (CAS 1986) ATOMIC NUMBER Be 22.990 24.305 19 20 K 18 VIIIA 2 GROUP (IUPAC 1985) (285) Bi Po 208.98 (209) 115 116 At Rn (210) 117 (222) 118 Fl Mc Lv Ts Og (287) (289) (291) (294) (294) www.periodni.com Li IIA 6.941 9.0122 11 12 5 © 2017 Eni Generalić PERIODIC TABLE OF THE ELEMENTS H 1.0079 2 4 3 4 www.periodni.com IA 1 1 3 19 18 1. Write a sceleton equation 2. Separate the redox reaction into half-reactions a) Assign oxidation numbers for each atom b) Identify and write out all redox couples in reaction c) Combine these redox couples into two half-reactions 3. Balance the atoms in each half reaction a) Balance all other atoms except H and O b) Balance the oxygen atoms with H2O c) Balance the hydrogen atoms with H+ d) In a basic medium, add one OH to each side for every H+ ion 4. Balance the charge with e5. Make electron gain equivalent to electron loss in the half-reactions 6. Add the half-reactions together 7. Simplify the equation Finally, check that the elements and charges are balanced 6.674 08·10 N m kg 3 -1 0.022 710 947 m mol -1 2 17 16 www.periodni.com PHYSICAL CONSTANTS 1 15 14 GUIDELINES FOR BALANCING REDOX EQUATIONS Absolute zero ........................ -273.15 °C 23 -1 Avogadro constant ................ 6.022 140 857·10 mol Base of natural logarithms ..... 2.718 281 828... -19 Electronvolt ........................... 1.602 176 6208·10 J -1 Faraday constant ................... 96 485.332 89 C mol Constant of gravitation .......... Molar volume of ideal gas ....... Elementary charge ................ Standard pressure ................. 13 12
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