Question

Which element among the following is used as reducing agent for reduction of remaining three elements from their oxides?

Options

• Mg

• Zn

• Al

• Hg

Answer 1

Mg

Explanation:

`"E"_"Mg"^0` = - 2.37, `"E"_"Zn"^0` = - 0.763

`"E"_"Al"^0` = - 1.66, `"E"_"Hg"^0` = + 0.79

∵ `"E"_"Mg"^0` is very small it undergo oxidation, it means it acts as a reducing agent.