Look at the periodic table.

what is the symbol for the magnesium ion that forms when magnesium metal reacts with sulfur, s?

mg +

mg –

mg 2-

mg 2+

Which statement is usually true about the relationship between activation energy and reaction rates? low activation energy barriers result in low rates. high activation energy barriers result in low rates. low activation energy barriers result in no reaction. high activation energy barriers result in no reaction.