Question: how many electrons are in the ion co32-?
Answer: And their presence is clear from the Lewis structure of carbonate anion..... there are 8 inner core electrons, i.e. formally the 1s2 electrons, and for O=C(−O−)2 there 24 electrons (i.e. 12 electron pairs) involved in bonding or present as lone pairs. Thirty-two electrons as required.