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A number of elements are available in ea...

A number of elements are available in earth's crust but most abundant elements are___________

A

Al and Fe

B

Al and Cu

C

Fe and Cu

D

Cu and Ag

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The correct Answer is:
A
(a) Among a number of elements which are available in earth crust, the most abundant elements are aluminium and iron. Aluminium is third most abundant element in earth crust. i.e. 8.3% by weight while iron present in earth crust with 4.2% by weight. Copper and silver are silver are also found in earth crust but their abundance percentage is low.
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