Why is iron not deposited over a copper plat when copper plate is dipped in iron sulphate?

Iron will not deposit onto a copper plate when it is dipped in iron sulfate because copper has a lower reactivity than iron. In a displacement reaction, a more reactive metal will displace a less reactive metal from its compound. In this case, since iron is more reactive than copper, it displaces copper in the iron sulfate solution forming iron sulfate and preventing the deposition of iron on the copper plate.