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What is the chemical formula of beryl?

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in Chemistry – Class 11 by (148k points)
What is the chemical formula of beryl?

(a) Be3Al2Si6O18

(b) Be3AlSi6O18

(c) Be3Al2Si6O

(d) BeAl2Si6O18

This question was addressed to me in class test.

My question is based upon p-Block Elements in section p-Block Elements of Chemistry – Class 11

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Right answer is (a) Be3Al2Si6O18

For explanation I would say: The chemical formula of beryl is given as Be3Al2Si6O18. Beryl is a type of cyclic silicate and it has two oxygen atoms shared and the basic unit is Si6O18^12-. It is known as beryllium aluminium cyclosilicate.

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