6. An ion formed from a single atom has 18 electrons and a charge of +1. In water, this compound dissociates into ions. Write the chemical symbol for this ion.
The ion formed from a single atom has 18 electrons and a charge of +1 most likely would be potassium. It can have a +1 charge and when in aqueous form it dissociates into K+1 ions. Hope this answers the question. Have a nice day.