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What are polyatomic ions? Give examples?

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asked Nov 4, 2017 in Chemistry by jisu zahaan (28,760 points) ● 26 ● 374 ● 813

What are polyatomic ions? Give examples?

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answered Nov 4, 2017 by sforrest072 (157,439 points) ● 61 ● 410 ● 941
selected Nov 5, 2017 by sarthaks
 
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A polyatomic ion is a group of atoms carrying a charge (positive or negative). 

For example, ammonium ion (NH4 +), hydroxide ion (OH− ), carbonate ion (CO3 2−), sulphateion (SO4 2−). 

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