What happens when magnesium reacts with very dilute nitric acid? Write an equation for the reaction involved.

43 How do non-metals react with hydrogen? Explain with an example. 44 What happens when calcium reacts with chlorine? Write an equation for the reaction which takes place. 45 Arrange the following metals in order of their chemical reactivity, placing the most reactive metal first: Magnesium, Copper, Iron, Sodium, Zinc, Lead, Calcium. 45 What happens when a rod of zinc metal is dipped into a solution of copper sulphate? Give chemical equation of the reaction involved.