Polyatomic Cations NH 4 + ammonium ion H 3 O + hydronium ion Polyatomic Anions -1-2-3: CH 3 COO- or C 2 H 3 O 2- acetate ion CHO 2- formate ion ClO- hypochlorite ion ClO 2- chlorite ion ClO 3- chlorate ion ClO 4- perchlorate ion CN- cyanide ion HCO 3- hydrogen carbonate ion or bicarbonate ion 1.008 I Hydrogen 6.94 2 Lithium 22.99 Periodic Table of Elements ILA Be 9.01 Beryllium Mg 24.30 He 111A IVA VA VIA 3 sodium VB VIB 140.12 Cerium Table of Common Polyatomic Ions (by charge) +1 -1 NH4+ Ammonium C2H3O2- H3 O File Type: pdf . www.chemistry.wustl.edu/~edudev/LabTutorials/PeriodicProperties/ Common Polyatomic Ions Name(s) Formula Name(s) Formula ammonium NH4 + acetate CH3COO-C2H3O2-bromate BrO3-carbonate CO3 2-chlorate ClO3-chlorite ClO2-chromate CrO4 2-cyanide CN-dichromate Cr2O7 2-hydrogen carbonate bicarbonate HCO3-hydrogen sulfate bisulfate HSO4-hydrogen phosphate biphosphate HPO4 2-hydroxide OH- Pages: 1 Page(s) Table of Selected Polyatomic Ions. carbonate, CO 3 2-. arsenate, AsO 3 3- . Otherwise the charge is even. Size: 62.36 KB . Select the name of the ion for information about its occurrence, uses, properties, and structure. POLYATOMIC IONS CHART NAME: 1- Charge 2- Charge 3- Charge Aluminate AlO 2 − Tetraborate B 4 O 7 2-Arsenite AsO3 3− Metaborate BO Polyatomic Ion Table Formula Name Formula Name NO 3-nitrate ClO4-perchlorate NO 2-nitrite ClO3-chlorate CrO 4 2-chromate ClO2-chlorite Cr2O7 2-dichromate ClO-hypochlorite CN-cyanide IO 4-periodate SCN-thiocyanate IO 3-iodate MnO 4-permanganate IO2-iodite OH-hydroxide IO-hypoiodite O2 2-peroxide BrO4-perbromate NH 2-amide BrO3-bromate SO 4 2-sulfate BrO This is about the charges of polyatomic ions, determined by the number of valence electrons (i.e. Common Polyatomic Ions ; 1- 2- 3- 1+ 2+ acetate, CH 3 COO – . Learn chemistry table e reference tables polyatomic ions with free interactive flashcards. Table of common polyatomic cations, arranged by family. Alternate names are given in italics. Pages: 2 Page(s) ammonium, NH 4 + . dimercury, Hg 2 2+ . File Type: pdf . Table E: Selected Polyatomic Ions Copyright 2001-2018 Castle Software, Inc. All Rights Reserved A rule or two about polyatomic ions From –ate…adding an oxygen makes per- -ate…taking away an oxygen (from the original –ate) makes –ite…taking away another oxygen makes hypo- -ite… An example: Hypochlorite ClO-1 Chlorite ClO2-1 Base ion → Chlorate ClO3-1 Perchlorate ClO4-1 Choose from 500 different sets of chemistry table e reference tables polyatomic ions flashcards on Quizlet. group number in the periodic table) brought by all the atoms in the ion: If the polyatomic ion contains an odd number of atoms from elements with odd atomic number the charge of the polyatomic ion is odd. View Table of Common Polyatomic Ions 2.pdf from CHEMISTRY 154 at Seoul National University. Size: 114.88 KB . Blank entries are uncommon or unstable; for a complete table see the Field Guide to Polyatomic Ions.