Question

What are polyatomic ions? Give examples?

  • atoms and molecules CBSE Class 9
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Answer

A polyatomic ion is a group of atoms carrying a charge (positive or negative).

For example, ammonium ion (𝑁𝐻4 +), hydroxide ion (OH− ), carbonate ion (𝐶𝑂32−), sulphateion (𝑆𝑂42−).

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