Question

What is the name of $Ni{{(Cl{{O}_{3}})}_{2}}$ ?

Answer 1

While writing the name of an ionic compound we are supposed to write the cation name first and later anion name should be written. Identification of the cationic part and anionic part is crucial while writing the name for an ionic compound.

Complete answer:
- In the question it is given that to write the name of $Ni{{(Cl{{O}_{3}})}_{2}}$ .
- We have to identify if the given compound is ionic or not.
- We know that the given compound $Ni{{(Cl{{O}_{3}})}_{2}}$ is ionic in nature.
- The cationic part in the given chemical is nickel and anionic part is chlorate.
- In the chemical the subscript after chlorate (anion) is two, means the charge on the nickel is +2.
- The subscript present after anion part gives the idea about the oxidation state of the cation.
- Nickel belongs to transition elements and exhibits various oxidation states.
- Here in the given chemical nickel oxidation state is ‘+2’.
- Coming to anion part chlorate ($ClO_{3}^{-}$ ).
- The charge which is present in anion is ‘-1’.
- Now we have to balance the both anionic and cationic charge.
- Therefore the chemical name of $Ni{{(Cl{{O}_{3}})}_{2}}$ is nickel(II)chlorate.

Note:
The oxidation state of the cation part is supposed to be represented in roman numerals in brackets after the name of the cation in the chemical name of the compound. In the given chemical roman number (II) gives the information about the oxidation state of the nickel (transition metal).