Metal M will displace copper from aqueous copper(II) sulfate solution, but will not displace iron from aqueous iron(II) sulfate solution. M is extracted from its oxide by heating the oxide with carbon. What is the order of reactivity of these four metals? Reactivity order table (least reactive to most reactive): A: copper, metal M, iron, sodium. B: copper, iron, metal M, sodium. C: sodium, metal M, iron, copper. D: sodium, iron, metal M, copper.

Which deduction about the element astatine, At, can be made from its position in Group VII?

Which pair of properties are both correct for a typical transition element?

What happens when zinc foil is placed in an aqueous solution of copper(II) sulfate?

The equation shows what happens in a redox reaction between iron(II) chloride and chlorine gas. 2FeCl2 + Cl2 → 2FeCl3…

Which acid and base react together to produce an insoluble salt?

A solution of fertiliser was tested as shown. Which ions must be present in the fertiliser?