Question

Define polyatomic ion. Give one example
I want an answer in the level of 9th grade. Thanks

Answer 1

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THANKS FOR THE QUESTION...

let us know what is ion first...

ION:-It is a charged atom or group of atoms.

There are 2 types of ions-
Anions: negatively charged
Cations: positively charged

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GETTING BACK TO YOUR QUESTION...

As poly means group of something, Polyatomic means group of atoms.

Hence POLYATOMIC IONS means Group of atoms containing any charge that can be positive or negative.
It can also be called molecular ion.

EXAMPLES:-

Polyatomic ions                                     Symbol

Ammonium                                              NH4+

Hydroxide                                                OH–

Nitrate                                                     NO3–

Hydrogen carbonate                                HCO3–

Sulphate                                                  SO42-

Sulphite                                                   SO32-

Phosphate                                               PO43-

Carbonate                                                CO32-

HOPE IT HELPS

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Answer 2

Polyatomic ions are ions which consist of more than one atom.

For example, nitrate ion, NO3-, contains one nitrogen atom and three oxygen atoms.

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