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Assertion (A): If aluminium atom s repla...

Assertion (A): If aluminium atom s replace a few silicon atoms in three dimensional network of silicon dioxide, the overall structure acquries a negative charge.
Reason(R): Aluminium is trivalent while silicon is tetravalent.

A

Both A and R are correct and R is the correct explanation of A.

B

Both A and R are correct and R is not the correct explanation of A.

C

Both A and R are not correct.

D

A is not correct but R is correct.

Text Solution

Verified by Experts

The correct Answer is:
A, C
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