<prompt> Which of the following is a non-essential metalmineral?SodiumManganeseIronLead  <response>: Ans is d i.e. Lead ea Shinde 6e p533Lead is not at all an essential mineral; rather it is toxic to the body. Harrison 17e Chapter e34. Heavy Metal PoisoningHarper gives a list of essential minerals along with their functions in the body.Essential minerals and their functionFunctionMineralStructural functionCalcium, magnesium, phosphateInvolved in membrane functionSodium, potassiumFunction as prosthetic groups in enzymesCobalt, copper, iron, molybdenum, selenium, zincRegulatory role or role in hormone actionCalcium, chromium, iodine, magnesium, manganese, sodium, potassiumKnown to be essential, but function unknownSilicon, vanadium, nickel, tinHave effects in the body, but essentiality is not establishedFluoride, lithiumMay occur in foods and known to be toxic in excessAluminum, arsenic, antimony, boron, bromine, cadmium, cesium, germanium, lead, mercury, silver, strontium 