SI Units: Base (metric) [derived] Unit of… Name Symbol Length meter m kilogram kg Mass (gram) (g) Time second s kelvin K Temperature (Celsius) (°C) Amount mole mol [Energy] [Joule] [J] 1 1 2 3 4 5 6 7 Factor 1012 109 106 103 102 101 Name tera giga mega kilo hecto deka SI Power of 10 Prefixes Symbol Factor Name T deci 10−1 G centi 10−2 M milli 10−3 k micro 10−6 h nano 10−9 −12 da pico 10 Symbol d c m µ n p Naming Acids from Anions -ide hydro<root>ic acid bromide HBr = hydrobromic acid -ite <root>ous acid chlorite HClO2 = chlorous acid -ate <root>ic acid nitrate HNO3 = nitric acid 1 H hydrogen 2 3 Li 4 Be lithium beryllium 11 Na 12 Mg sodium magnesium 3 4 5 6 7 8 9 10 11 19 K 20 Ca 21 Sc 22 Ti 23 V 24 Cr 25 Mn 26 Fe 27 Co 28 Ni 29 Cu potassium calcium scandium titanium vanadium 37 Rb 38 Sr 39 Y 40 Zr 41 Nb rubidium strontium yttrium 55 Cs 56 Ba 57 La 72 Hf 73 Ta cesium barium lanthanum 87 Fr 88 Ra 89 Ac 104 Rf 105 Db francium radium actinium 58 Ce Exact 1 mL = 1 cm3 1 in = 2.54 cm 1 cal = 4.184 J 18 2 He 13 14 15 16 17 helium 5 B 6 C 7 N 8 O 9 F 10 Ne boron carbon nitrogen oxygen fluorine neon 13 Al 14 Si 15 P 16 S 17 Cl 18 Ar 12 aluminum silicon phosphorus sulfur chlorine argon 30 Zn 31 Ga 32 Ge 33 As 34 Se 35 Br 36 Kr Naming Binary Nonmetal Compounds First element followed by ionic name of second (use prefixes); no mono on first element; shorten double vowels aoo; ooo chromium manganese Numeric Prefixes 1 = mono 2 = di 3 = tri 4 = tetra 5 = penta 6 = hexa 7 = hepta 8 = octa 9 = nona 10 = deca iron cobalt nickel copper zinc gallium germanium arsenic selenium bromine krypton 43 Tc 44 Ru 45 Rh 46 Pd 47 Ag 48 Cd 49 In 50 Sn 51 Sb 52 Te 53 I 54 Xe palladium silver cadmium indium tin antimony tellurium iodine xenon 75 Re 76 Os 77 Ir 78 Pt 79 Au 80 Hg 81 Tl 82 Pb 83 Bi 84 Po 85 At 86 Rn platinum gold mercury thallium lead bismuth polonium astatine radon 106 Sg 107 Bh 108 Hs 109 Mt 110 Ds 111 Rg 112 Cn 113 Nh 114 Fl 115 Mc 116 Lv 117 Ts 118 Og 59 Pr 60 Nd 61 Pm 62 Sm 63 Eu 64 Gd 65 Tb 66 Dy 67 Ho 68 Er 69 Tm 70 Yb 71 Lu 91 Pa 92 U 93 Np 94 Pu 95 Am 96 Cm 97 Bk 98 Cf 99 Es 100 Fm 101 Md 102 No 103 Lr 42 Mo molybdenum 74 W tungsten cerium 90 Th thorium uranium neptunium plutonium ─────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────── Description Group 17 = 1− Group 16 = 2− Group 15 = 3− Monatomic Nonmetal Anions Example Cl− S2− N3− Name chloride sulfide nitride Monatomic Metal Cations Description Example Name Group 1 = 1+ Na+ sodium Group 2 = 2+ Ca2+ calcium Group 13 = 3+ Al3+ aluminum Transition = Roman numeral Au3+ gold(III) Inner transition = Roman num. U6+ uranium(VI) No Roman numeral needed for: Ni2+, Zn2+, Cd2+, Ag+ Alternative (old) names for some transition metal ions Cr2+ = chromous Cr3+ = chromic 2+ Mn = manganous Mn3+ = manganic Fe2+ = ferrous Fe3+ = ferric Co2+ = cobaltous Co3+ = cobaltic Cu+ = cuprous Cu2+ = cupric Sn2+ = stannous Sn4+ = stannic Au+ = aurous Au3+ = auric Hg22+ = mercurous Hg2+ = mercuric Pb2+ = plumbous Pb4+ = plumbic Formula NH4+ H3O+ C2O42− CN− OH− O22− CH3COO− CH3CO2− C2H3O2− CrO42− Cr2O72− MnO4− NO2− NO3− SO32− SO42− HSO4− S2O32− OCN− SCN− O2− HS− Name ammonium hydronium oxalate cyanide hydroxide peroxide Polyatomic Ions Formula CO32− acetate chromate dichromate permanganate nitrite nitrate sulfite sulfate hydrogen sulfate or bisulfate thiosulfate cyanate thiocyanate superoxide hydrogen sulfide HCO3− PO33− PO43− HPO42− H2PO4− ClO− ClO2− ClO3− ClO4− BrO− BrO2− BrO3− BrO4− IO− IO2− IO3− IO4− I3− N3− HO2− HCOO− Name carbonate hydrogen carbonate or bicarbonate phosphite phosphate hydrogen phosphate dihydrogen phosphate hypochlorite chlorite chlorate perchlorate hypobromite bromite bromate perbromate hypoiodite iodite iodate periodate triiodide azide hydrogen peroxide formate
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