Polyatomic ion an ion that is com posed of more than

This preview shows page 1 out of 1 page.

there are only a few of them. Polyatomic ion An ion that is com- posed of more than one atom. Note in Table 3.3 that several pairs of ions— CO 3 2 - and HCO 3 - , for example—are related by the presence or absence of a hydrogen ion, H + . In such instances, the ion with the hydrogen is sometimes named using the prefix bi -. Thus, CO 3 2 - is the car- bonate ion, and HCO 3 - is the bicarbonate ion; similarly, SO 4 2 - is the sulfate ion, and HSO 4 - is the bisulfate ion. TABLE 3.3 Some Common Polyatomic Ions Name Formula Name Formula Hydronium ion H 3 O + Nitrate ion NO 3 - Ammonium ion NH 4 + Nitrite ion NO 2 - Acetate ion CH 3 CO 2 - Oxalate ion C 2 O 4 2 - Carbonate ion CO 3 2 - Permanganate ion MnO 4 - Hydrogen carbonate ion (bicarbonate ion) HCO 3 - Phosphate ion PO 4 3 - Chromate ion CrO 4 2 - Hydrogen phosphate ion (biphosphate ion) HPO 4 2 - Dichromate ion Cr 2 O 7 2 - Dihydrogen phosphate ion H 2 PO 4 - Cyanide ion CN - Sulfate ion SO 4 2 - Hydroxide ion OH - Hydrogen sulfate ion (bisulfate ion) HSO 4 - Hypochlorite ion OCl - Sulfite ion SO 3 2 - PROBLEM 3.17 Name the following ions: (a) NO 3 - (b) CN - (c) OH - (d) HPO 4 2 - PROBLEM 3.18 Which of the biologically important ions (see Chemistry in Action, p. 86) belong to Group 1A? To Group 2A? To the transition metals? To the halogens?
Image of page 1

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern