Answer :
Answer: The name is Copper(II) nitrate.
Explanation: The name of the ionic compounds is written by writing the name of the cation first followed by its oxidation state in round brackets and then the name of the anion is written without any suffix.
Thus the cation copper is written first as calcium followed by the oxidation state as (II) and then the anion which is nitrate.
Thus the name is Copper(II) nitrate.