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Question: Answered & Verified by Expert
Assertion : If aluminium atoms replace a few silicon atoms in three dimensional network of silicon dioxide, the overall structure acquires a negative charge.
Reason: Aluminium is trivalent while silicon is tetravalent.
Chemistryp Block Elements (Group 13 & 14)
Options:
  • A
    If both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion.
  • B
    If both Assertion and Reason are correct but Reason is not a correct explanation of the Assertion.
  • C
    If the Assertion is correct but Reason is incorrect.
  • D
    If the Assertion is incorrect but the Reason is correct.
Solution:
1508 Upvotes Verified Answer
The correct answer is:
If both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion.
In aluminosilicates (anion), some of the silicon atoms are replaced by aluminium. Since, aluminium is trivalent while silicon is tetravalent, hence we get negatively charged ion.

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