(PO 4)3–, is an example of a polyatomic ion (Figure 2). A polyatomic ion is an ion that consists of a stable group of several atoms acting together as a single charged particle. ˚ e ionic charge of a polyatomic ion is shared over the entire ion rather than being on just one atom.

PO 4 3-phosphate ion: ClO-hypochlorite ion: S 2 O 3 2-thiosulfate ion: HPO 4 2-hydrogen phosphate: CrO 4 2-chromate ion: Hg 2 2+ mercury(I) ion: H 2 PO 4-dihydrogen phosphate: Cr 2 O 7 2-dichromate ion: H 3 O + hydronium ion: PO 3 3-phosphite ion: MnO 4-permanganate ion: NH 3: ammonia: Formulas and Names for Some Common Acids (all names should have acid added) H 2 SO 4: sulfuric: H 3 PO 4: phosphoric: HNO 3: nitric

Polyatomic Ion. Name. OH-1. hydroxide. SO4-2. sulfate. PO4-3. phosphate.

H. 3. O. 2 – 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 ClO 2-1 Base ion → chlorate ClO 3-1 perchlorate ClO 4-1 Symbols and Names of Some Common Polyatomic Ions and One Molecule: NH 4 + ammonium ion: OH-hydroxide ion: CN-cyanide ion: SO 4 2-sulfate ion: O 2 2-peroxide ion: CNO-cyanate ion: HSO 4-hydrogen sulfate ion: C 2 H 3 O 2-acetate ion: SCN-thiocyanate ion: SO 3 2-sulfite ion: ClO 4-perchlorate ion: CO 3 2-carbonate ion: NO 3-nitrate ion: ClO 3 Polyatomic ions have characteristic formulas, names, and charges that should be memorized. For example, NO 3− is the nitrate ion; it has one nitrogen atom and three oxygen atoms and an overall 1− charge. Table 4.9.

Phosphate, PO43−, is a polyatomic ion that can combine with any cation to form an ionic compound. Identify all the formulas below that correctly represent

3! 3. ** note that 30 Apr 2018 Polyatomic ions each carry a specific charge, which is determined by their numbers of valence electrons.

2005-06-16

NaNO3. Al(NO3)3.

( SCN)1-. thiocyanate. (SO3)2-.
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IO4-. IO3-.

Write the formulas for the following ions: ammonium; carbonate; sulfate; phosphate; Name the following ions: PO 3 3-SiO 3 2-OH-MnO 4- phosphate PO4 3-phosphite PO3 3-silicate SiO4 4-sulfate SO4 2-sulfite SO3 2-thiocyanate SCN-thiosulfate S2O3 2-Other Ions copper (I) cuprous Cu+ copper (II) cupric Cu2+ iron (II) ferrous Fe2+ iron (III) ferric Fe3+ lead (II) plumbous Pb2+ lead (IV) plumbic Pb4+ mercury (I) mercurous Hg2 2+ mercury (II) mercuric Hg2+ tin (II) stannous Sn2+ Po Cl covalent PoCl 2 Polonium dichloride As Ca ionic Ca 3 As 2 Calcium Arsenide Al I ionic AlI 3 Aluminum Iodide Mg At ionic MgAt 2 Magnesium Astatide Ca P ionic Ca 3 P 2 Calcium Phosphide Polyatomic ions are ions formed by more than one atom. Below are some common polyatomic ions along with their oxidation numbers: • (SO 4)-2 Sulfate • (PO 4 Definition of Polyatomic Ions.
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Mass fractions (mg/g) of polyatomic ions in the inhalable fraction (TIH) of suspended particulate matter (SPM). CSVDisplay Table. Phosphate (PO4−3)

For each name prompted, identify the correct polyatomic ion. In solvents where five-coordinated metal ion solvates are dominating, there is an increase If ample precautions are taken, it is possible to crystallize solid iron(III) DMTF Jahn, H. A.; Teller, E., Stability of polyatomic molecules in degenerate. CO32−, fosfatjonen PO43−, sulfatjonen SO42−, nitratjonen NO3−, hydroxidjonen OH− och ammoniumjonen NH4+.