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Polyatomic Ions in General Chemistry

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Terms in this set (18)

  • Name the polyatomic ion with formula \(\mathrm{NO_3^-}\).

    Nitrate ion.

  • Name the polyatomic ion with formula \(\mathrm{SO_4^{2-}}\).

    Sulfate ion.

  • Name the polyatomic ion with formula \(\mathrm{OH^-}\).

    Hydroxide ion.

  • What is the charge on the ammonium ion?

    +1 charge; formula is \(\mathrm{NH_4^+}\).

  • How does the suffix '-ate' differ from '-ite' in polyatomic ions?

    '-ate' ions have more oxygen atoms than '-ite' ions in the same series.

  • Give an example of a polyatomic ion with the '-ite' suffix.

    Sulfite ion, \(\mathrm{SO_3^{2-}}\).

  • What is the polyatomic ion with formula \(\mathrm{CO_3^{2-}}\)?

    Carbonate ion.

  • What is the polyatomic ion with formula \(\mathrm{PO_4^{3-}}\)?

    Phosphate ion.

  • What is the charge on the acetate ion \(\mathrm{C_2H_3O_2^-}\)?

    -1 charge.

  • How are polyatomic ions important in naming ionic compounds?

    They act as a single charged unit and are named as part of the compound, often paired with metal cations.

  • What is the polyatomic ion with formula \(\mathrm{ClO_4^-}\)?

    Perchlorate ion.

  • What is the polyatomic ion with formula \(\mathrm{ClO_3^-}\)?

    Chlorate ion.

  • What is the polyatomic ion with formula \(\mathrm{ClO_2^-}\)?

    Chlorite ion.

  • What is the polyatomic ion with formula \(\mathrm{ClO^-}\)?

    Hypochlorite ion.

  • What suffix indicates the fewest oxygen atoms in a series of polyatomic ions?

    Hypo- prefix with -ite suffix indicates the fewest oxygens.

  • What is the general rule for naming polyatomic ions with varying oxygen numbers?

    Use prefixes hypo- and per- and suffixes -ite and -ate to indicate oxygen count.

  • What is the polyatomic ion with formula \(\mathrm{NO_2^-}\)?

    Nitrite ion.

  • What is the polyatomic ion with formula \(\mathrm{HCO_3^-}\)?

    Bicarbonate (or hydrogen carbonate) ion.