Assertion (A) : If aluminium atoms replace a few silicon atoms in three dimensional network of silicon dioxide, the overall structure acquires 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 AB. Both A and R are correct but R is not the correct explanation of AC. Both A and R are not correctD. A is not correct but R is correct

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

1.	Assertion (A) : If aluminium atoms replace a few silicon atoms in three dimensional network of silicon dioxide, the overall structure acquires 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 AB. Both A and R are correct but R is not the correct explanation of AC. Both A and R are not correctD. A is not correct but R is correct
Answer» Correct Answer - d Assertion is not correct but reason is correct. Aluminium is trivalent whereas silicon is tetravalent. If aluminium atom replaces a few silicon atoms in three dimensional network of silicon dioxide, the overall structure acquires neutrally.

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