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Interactive periodic table showing names, electrons, and oxidation states. Visualize trends, 3D orbitals, isotopes, and mix compounds. Fully descriptive writeups.
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Common Polyatomic Ions (Alphabetical order by ion name) NOTE:-ite ending means one less oxygen than the -ate form. PREFIXES: per- = one more oxygen than -ate hypo- = one less oxygen than –ite . Ion Name
Naming Oxy-ions ‣ All 20 oxy-ions have the same charge as their central atom normally prefers — except carbon and nitrogen ‣ P and S oxy-ions have 3 or 4 oxygens. ‣ C,N,Cl,Br, and I oxy-ions have 2 or 3 oxygens. ‣ The “ite” ion is always the one with less oxygens. ‣ The “ate” ion is always the one with more oxygens.
Naming Oxyanions: Oxyanions are polyatomic ions where oxygen is attached to a nonmetal and as was discussed in section 2.6.4.2.1, nonmetals of the same periodic group from homologous oxyanions. Lets look at the 4 oxyanions of bromine
neon. Table of Polyatomic Ions. acetate CH 3COO- dichromate Cr 2O 2-. 7 dihydrogen phosphate H 2PO -. 4. ammonium NH4 + cyanide CN- silicate 2- SiO3 benzoate C6H5COO- hydroxide OH- sulphate SO4 2-. borate BO3 3- iodate - IO3 sulphite 2- SO3 carbonate 2- CO3 nitrate - NO3 hydrogen sulphide HS-.
chlorite ClO2 – iodate IO3 – thiocyanate SCN–. Li+ Be2+. chromate CrO42– monohydrogen phosphate HPO42– thiosulfate S2O32–. lithium beryllium. cyanate CNO– nitrate NO3 – POSITIVE POLYATOMIC IONS cyanide CN– nitrite NO2 –. 11. ammonium NH4+. 12. dichromate Cr2O72– orthosilicate SiO44– hydronium H3O+.
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