Question

What is ion? Give answer by also telling about positive and negative ion.

Answer 1

an atom or an molecule which have an charge on them are alled as iopns , it is formed due to the losing or the gaining of electrons when the atom whants to become stable , or bond with other atom etc

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there are 2 types of ions
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1)anion
2)cation
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ANION
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negatively charged atoms are called as cations , it is formed due to the gaining of electrons 

eg:- Cl- , Br- etc
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CATIONS
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positively charged atoms are called as cations , it is formed due to the losing of electrons

eg:- K+ , Ag3+ etc
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and the bond that forms between an anion and an cation are called as ionic bonds
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