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10 March, 10:05

Nitrate (NO3-), ammonium (NH4), and carbonate (CO32-) are examples of polyatomic ions.

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  1. 10 March, 10:29
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    Ions are atoms with additional or missing electrons; thus, ions have distinct charges whether positive or negative. Extra electron is negative charge while missing electron is positive charge. Nitrate's is - 1. Carbonate is - 2. Ammonium's charge is + 1. Therefore, it should be NH4 + and not just NH4.
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