It should be 24 electrons
Cu since the oxidation number of Cu is changed from 0 to +2. It means it is oxidized as per loss of two electrons.
Telophase because it is the fifth and final phase of mitosis, the process that separates the duplicated genetic material carried in the nucleus of a parent cell into two identical daughter cells. Telophase begins once the replicated, paired chromosomes have been separated and pulled to opposite sides, or poles, of the cell.
Hope this helps! Please correct me if I'm wrong :)