– TABLE OF POLYATOMIC IONS 2– acetate CH3COO oxalate C2O4 3– – – arsenate AsO4 dihydrogen phosphate H2PO4 perchlorate ClO4 PERIODIC TABLE OF IONS 3– hydrogen carbonate HCO – periodate – arsenite AsO3 3 IO4 – – KEY – hydrogen oxalate HC2O4 permanganate MnO benzoate C6H5COO 4 atomic ion HSO – 2– 26 3+ charge borate BO 3– hydrogen sulfate 4 peroxide O2 number Fe 3 – 1 – hydrogen sulfide HS phosphate PO 3– iron (III) ion 17 18 bromate BrO3 4 name hydrogen sulfite HSO – 4– symbol 2+ 1 carbonate CO 2– 3 pyrophosphate P2O7 Fe (IUPAC) 1 2 + 3 hydroxide OH– sulfate 2– iron (II) - H chlorate ClO – SO4 H He 3 hypochlorite ClO– sulfite SO 2– hydrogen 2 chlorite ClO – 3 13 14 15 16 hydride helium 2 iodate IO – thiocyanate SCN– 3 4 chromate CrO 2– 3 5 6 7 8 9 10 4 monohydrogen phosphate HPO 2– thiosulfate S O 2– + Be2+ – 4 2 3 3- 2- - Li cyanate CNO – B C N O F Ne nitrate NO POSITIVE POLYATOMIC IONS lithium beryllium cyanide – 3 boron carbon nitride oxide fluoride neon CN nitrite NO – ammonium NH + dichromate 2– 2 4 11 12 Cr2O7 orthosilicate SiO 4– hydronium H O+ 13 14 15 16 17 18 Na+ Mg2+ 4 3 Al3+ Si P3- S2- Cl- Ar sodium magnesium 3 4 5 6 7 8 9 10 11 12 aluminum silicon phosphide sulfide chloride argon 19 20 21 22 Ti 4+ 23 V 3+ 24 Cr 3+ 25 Mn 2+ 26 Fe 3+ 27 Co 2+ 28 Ni 2+ 29 Cu 2+ 30 31 32 33 34 35 36 K+ Ca2+ Sc3+ titanium (IV) vanadium(III) chromium (III) manganese(II) iron (III) cobalt (II) nickel (II) copper (II) Zn2+ Ga3+ Ge4+ As3- Se2- Br- Kr 3+ 5+ 2+ 4+ 2+ 3+ 3+ + potassium calcium scandium Ti V Cr Mn Fe Co Ni Cu zinc gallium germanium arsenide selenide bromide krypton titanium (III) vanadium (V) chromium (II) manganese(IV) iron (II) cobalt (III) nickel (III) copper (I) 37 38 39 40 41 Nb 5+ 42 43 44 Ru 3+ 45 46 Pd 2+ 47 48 49 50 Sn 4+ 51 Sb 3+ 52 53 54 Rb+ Sr2+ Y3+ Zr4+ niobium (V) Mo6+ Tc7+ ruthenium(III) Rh3+ paladium(II) Ag+ Cd2+ In3+ tin (IV) antimony(III) Te2- I- Xe 3+ 4+ rubidium strontium yttrium zirconium Nb molybdenum technitium Ru4+ rhodium Pd silver cadmium indium Sn2+ Sb5+ telluride iodide xenon niobium(III) ruthenium(IV) paladium(IV) tin (II) antimony(V) 55 56 57 72 73 74 75 76 77 78 4+ 79 3+ 80 2+ 81 + 82 2+ 83 3+ 84 2+ 85 86 Pt Au Hg Tl Pb Bi Po - Cs+ Ba2+ La3+ Hf4+ Ta5+ W6+ Re7+ Os4+ Ir4+ platinum(IV) gold (III) mercury (II) thallium (I) lead (II) bismuth(III) polonium(II) At Rn cesium barium lanthanum hafnium tantalum tungsten rhenium osmium iridium 2+ Au+ 2+ Tl3+ 4+ 5+ Po4+ astatide radon Pt Hg2 Pb Bi platinum(II) gold (I) mercury (I) thallium(III) lead (IV) bismuth(V) polonium(IV) 87 88 89 Fr+ Ra2+ Ac3+ francium radium actinium 58 59 60 61 62 Sm 3+ 63 Eu 3+ 64 65 66 67 68 69 70 Yb 3+ 71 Ce3+ Pr3+ Nd3+ Pm3+ samarium(III) europium (III) Gd3+ Tb3+ Dy3+ Ho3+ Er3+ Tm3+ ytterbium(III) Lu3+ cerium praseodymium neodymium promethium Sm2+ Eu2+ gadolinium terbium dysprosium holmium erbium thulium Yb2+ lutetium samarium(II) europium (II) ytterbium(II) 90 91 Pa 5+ 92 U 6+ 93 94 Pu 4+ 95 Am 3+ 96 97 Bk 3+ 98 99 100 101Md 2+ 102 No 2+ 103 Th4+ protactinium(V) uranium (VI) Np5+ plutonium(IV) americium(III) Cm3+ berkelium(III) Cf3+ Es3+ Fm3+ mendelevium (II) nobelium(II) Lr3+ thorium Pa4+ U4+ neptunium Pu6+ Am4+ curium Bk4+ californium einsteinium fermium Md3+ No3+ lawrencium protactinium(IV) uranium (IV) plutonium(VI) americium(IV) berkelium(IV) mendelevium (III) nobelium(III).