net ionic charge of 2,3,7,8,12,13,17,18-octaethyl-21H,23 H-porphine copper(II)

2, 3, 7, 8, 12, 13, 17, 18-octaethyl-21H, 23 H-porphine copper(II) | net ionic charge

2

proton count | 319 p (protons) electron count | 317 e (electrons) net ionic charge | 2