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Chemistry · Ch 5 — Alkali and Alkaline Earth Metals

Uses of Alkali Metals

5.2.4

Uses of Alkali Metals

  • Lithium is alloyed for several specialised uses: with lead, to make the 'white metal' bearings used in motor engines; with aluminium, for aircraft parts; and with magnesium, for armour plate. It is also used in thermonuclear reactions and to make electrochemical cells.
  • Sodium is used to make the Na/Pb alloy needed to manufacture the organolead compounds Pb(Et)₄ and Pb(Me)₄, which were historically used as anti-knock additives in petrol (lead-free petrol is used today). Liquid sodium metal also serves as the coolant in fast breeder nuclear reactors. …