Question
Which is the most abundant element on the earth?
✓
Answer
(i) Oxygen is the most abundant of all the elements on the earth.
(ii) $46.6 \%$ by mass of earth's crust contains oxygen and oxygen forms $20.95 \%$ by volume of air.
(ii) $46.6 \%$ by mass of earth's crust contains oxygen and oxygen forms $20.95 \%$ by volume of air.
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