Quartz is extensively used as a piezoelectric material, it contains:

P b

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S i

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T i

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S n

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Solution

The correct option is B $S i$
Piezoelectric materials are materials that produce an electric current when they are placed under mechanical stress.
There are several materials that we have known for some time that posses piezoelectric properties, including bone, proteins, crystals (e.g. Quartz) and ceramics (e.g. Lead Zirconate Titanate).
Quartz is a mineral composed of silicon and oxygen atoms in a continuous framework of $S i O_{4}$ silicon–oxygen tetrahedra, with each oxygen being shared between two tetrahedra, giving an overall chemical formula of $S i O_{2}$ .
Hence correct answer is option B.

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