So I've got a homework question which is gradually transforming by brain in to mashed potato!
Here it is..
Identify which of the following compounds contains ions and state the formal charges on the ions: NaCl, N2, MgO, AlCl3, and CO2.
Now, I'm not asking for someone to come in and give me the answer to all of them, I'm just after how I can find the answers, I just don't understand after a long time Googling... Thank you in advance!
Compounds and ions help!