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Oxygen forms what share of the earth's crust by mass?
A16.6 per cent
B46.6 per cent
C26.6 per cent
D66.6 per cent
Answer & Solution
Correct answer: B. 46.6 per cent
1. Oxygen is the most abundant element on earth.
2. Almost half the crust is made of it.
3. The figure is 46.6 per cent by mass.
_Source: NCERT Class 12 Chemistry, Chapter 7, The p-Block Elements._
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