Question

Difference between cation and anion..

Answer 1

Group of atoms carrying charges are called poly atomic ions.There are two types of ions :
Cations and Anions 

Cations are positively charged ions.When electric current is passed through them , it moves towards cathode.
Examples of Cation  : Fe²⁺ , Na⁺ , etc.

Anions  are negatively charged ions.When electric current is passed through them ,it moves towards anode.
Examples of Anions  : Cl⁻ , S ²⁻ etc.

Answer 2

$\huge{HEY!!}$
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✴$\bold{Cation}$

✔Positively charged ions are known as cations.

✔Cations are formed by loss of electrons by an atom.

✔In a cation, number of electrons are less than number of protons.

✔Eg:- ${Na}^{ + }$, ${Mg}^{2 + }$

✴$\bold{Anion}$

✔Negatively charged ions are known as anions.

✔Anions are formed by gaining of electron by an atom.

✔In anions, number of electrons are more than the number of protons.

✔Eg:- ${Cl}^{ - }$, ${O}^{2 - }$