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About 95% of the earth's crust is compos...

About `95%` of the earth's crust is composed of silicate minerals, alumino silicate clay r silica. Silicates are classified on the basis of bonding and the metal ions present in them. Some of the common categories of silicates are
(I) orthosilicates , (II) pyrosilicates
(III) cyclic silicates , (IV) chain silicates
(V) amphiboles , (VI) sheet silicates
(VII) three-dimensional network silicates
What is true regarding a double chain silicate 'Amphiboles' ?

A

It has two shared oxygen per tetrahedron

B

Its empirical formula is `(SiO_(3))_(n)^(6n-)`

C

It is formed by joining two single chain silicates through free `O^(-)`.

D

All the four oxygen of the tetrahedraon are shared.

Text Solution

Verified by Experts

The correct Answer is:
B
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About 95% of the earth's crust is composed of silicate minerals, alumino silicate clay r silica. Silicates are classified on the basis of bonding and the metal ions present in them. Some of the common categories of silicates are (I) orthosilicates , (II) pyrosilicates (III) cyclic silicates , (IV) chain silicates (V) amphiboles , (VI) sheet silicates (VII) three-dimensional network silicates Which of the following is not true regarding cyclic silicates ?

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