Answer
$Ca^{2+}$, $Cu^{+}$, $Cu^{2+}$, $O^{2-}$
Work Step by Step
Calcium forms $Ca^{2+}$ ion, Copper can form $Cu^{+}$ and $Cu^{2+}$ and Oxygen forms $O^{2-}$ ion
You can help us out by revising, improving and updating this answer.
Update this answerAfter you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.