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

Assertion (A): If aluminium atom s replace a few silicon atoms in thre

1.	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 but R is not the correct explanation of A.C. Both A and R are not correctD. A is not correct but R is correct.
Answer» Correct Answer - A Reason is the correct explnation for assertion.

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