Question

write the cations and anions present in the Na2CO3​

Answer 1

Cation is $Na^+$  and anion is $CO_3^{2-}$ is present in the $Na_2CO_3​$

Explanation:

When an atom accepts an electron negative charge is created on atom and is called as anion.

When atom loses an electron positive charge is created on atom and is called as cation.

For formation of a neutral ionic compound, the charges on cation and anion must be balanced. The cation is formed by loss of electrons by metals and anions are formed by gain of electrons by non metals.

For formation of $Na_2CO_3$, $Na^+$ is formed as cation and $CO_3^{2-}$ and by criss-cross method, the oxidation state of the ions gets exchanged and they form the subscripts of the other ions. This results in the formation of a neutral compound.

Thus cation is $Na^+$  and anion is $CO_3^{2-}$

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Answer 2

In $Na_2CO_3$ we get 2 sodium ions $(Na^+)$ as cation and 1 carbonate ion $CO_3^{2-}$ as anion.

Explanation :

An ion is formed when an atom looses or gains electron.

When an atom looses electrons, it will form a positive ion known as cation.

When an atom gains electrons, it will form a negative ion known as anion.

For formation of $Na_2CO_3$, 2 $Na^+$ are formed as cation and 1 $CO_3^{2-}$ as anion by the criss-cross method.

In criss-cross method, the oxidation state of the ions gets exchanged and they form the subscripts of the other ions. This results in the formation of a neutral compound.

Hence, in we get 2 sodium ions as cation and 1 carbonate ion as anion.

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