The compound formed between Cu2+ (copper(II) ion) and PO43- (phosphate ion) is named copper(II) phosphate.
The formula for this compound can be derived based on the charges of the ions. The copper ion has a charge of +2, while the phosphate ion has a charge of -3. To balance the charges, we need to find the lowest common multiple of the charges, which is 6. Thus, we will need 3 copper ions to provide a total positive charge of +6, and 2 phosphate ions to provide a total negative charge of -6.
This results in the formula Cu3(PO4)2. Therefore, the final answer is:
Copper(II) phosphate: Cu3(PO4)2