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Chemistry : Radicals & Chemical Symbols

 
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What is a Radical?

A radical is a group of atoms of elements, e.g., sulfate radical [SO4]. Some common radicals and their chemical symbols are listed below.

Valency Radical Symbol Ion
Monovalent [1] Ammonium NH4 NH41+
Hydroxide OH OH1-
Nitrate NO3 NO31-
Bicarbonate HCO3 HCO31-
Bisulfite HSO3 HSO31-
Bisulfate HSO4 HSO41-
Divalent [2] Carbonate CO3 CO32-
Sulfite SO3 SO32-
Sulfate SO4 SO42-
Trivalent [3] Phosphate PO4 PO43-

Practice Exercise for Chemistry Module on Chemical Symbols for Radicals - Basic

Practice Exercise for Chemistry Module on Chemical Symbols for Radicals - Advanced

Practice Exercise for Chemistry Module on Names of Polyatomic Ions - Advanced

 
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