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Ronak Misra from st john's sr.sec school , asked a question
Subject: Science , asked on 21/3/12

What are acidic and basic radicals?


Chandra Prakash ,Meritnation Expert added an answer
Answered on 22/3/12

Acidic radical are anions which are negatively charged. For example: SO4 2-, NO3 ¯ , etc.

Basic Radicals are cations which are positively charged. For example: Na+, Fe++, etc.

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Divya Janjua , From Air Force Bal Bharati School , added an answer
Answered on 21/3/12

A radical is an atom or group of atoms with at least one unpaired electron. 

An acid solved in water is hydrolyzed and you get H+ions and anions( neg.), the acid "lost" one or more hydrogen ions and is an acid radical now ( CL-, SO4-- f.e.).

A base solved in water is hydrolyzed and you get OH-ions and cations( pos.), the base "lost" one or more OH-groups and is a basic radical now ( Na+, Ba++ f.e.).

Or to explain it in another way: 
The anion or acid radical Cl- f.e. in a water solution of salt NaCl f.e., comes from the acid HCl and the cation or basic radical Na+ from the base NaOH.