Translate the words into formulas, predict the product, & balance the equations. Include states of matter. 1) Solid zinc metal reacts with sulfuric acid
2) Magnesium nitrate reacts in solution with potassium hydroxide

Ibelieve its a because an empirical formula usually has a ch in it your options are a or b

☆ionisation energy increases across a period from na -> ar☆ionisation energy decreases down a group from li -> fr☆ionic radius decreases across a period from na -> cl☆ionic radius increases down a groupfrom f -> ii hope it clarifies your doubts