Explain the extraction of metals remain at the top of the reactivity s

1.	Explain the extraction of metals remain at the top of the reactivity series.
Answer» Solution :The metals at the top of the reactivity series are HIGHLY reactive. They cannot be obtained from their compounds by heating with carbon, because these metals have more affinity for oxygen than carbon. Hence, for the extraction of such metals electrolytic reduction method is used.For example, sodium, MAGNESIUM and calcium are obtained by the electrolysis of their molten chlorides. During electrolysis, the metals are deposited at the cathode (the NEGATIVELY charged electrode). while chlorine is liberated at the anode (the positively charged electrode) in the electrolytic CELL. For example, At cathode (-): `Na^(+) + e^(-) to Na(s)` At anode (+) : `2Cl^(-) to Cl_2(g) + 2e^(-)` Similarly, aluminium is obtained by the electrolytic reduction of aluminium OXIDE.

Discussion