posted by Bryan .
How many electrons does the netural atom gain or lose to form each of the following ions?
The answer is contained in the question. If there is a "+", elecrons are lost. If there is a "-", electrons are gained. The number gained or lost equals the ion charge. The charge of I- is minus 1.
okay thanks.. one more question
Write the name of the following polyatomic ions.
Memorize these quickly.