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The most abundant element in the earth's crust is ?

  • A.Silicon
  • B.Oxygen
  • C.Nitrogen
  • D.Aluminium

Answer: B

Oxygen is the most abundant element in the earth's crust, at about 46 per cent by mass.

Almost all of it is locked in silicate minerals and oxides rather than free. Silicon follows at 28 per cent and aluminium at 8 per cent, the first metal on the list.

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