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Class 9 Chemistry :-NCERT Solution - Atoms And Molecules
Page No 44: Question 3:
What are polyatomic ions? Give examples?
Answer:
A polyatomic ion is a group of atoms carrying a charge (positive or negative). For example, ammonium ion, hydroxide ion (OH−), carbonate ion, sulphate ion.
, hydroxide ion (OH−), carbonate ion
, sulphate ion
.
