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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 but 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.

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If a trivalent atom replaces a few silicon atoms in three dimensional network of silicon dioxide, what would be the type of charge on overall structure ?

If a trivalent atom replaces a few silicon atoms in three dimensional network of silicon dioxide, what would be the type of charge on overall structure ?

Knowledge Check

  • 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 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.

  • 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 A
    B
    Both A and R are correct but 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

  • Assertion: ZSM-5 is used as a catalyst in petrochemical industries. Reason: Zeolites are three dimensional network Silicates in which some silicon atoms are replaced by aluminium atoms.

    A
    if both assertion and reason are true and the reason is the correct explanation of the assertion.
    B
    if both assertion and reson are true but reason is not the correct explanation of the assertion.
    C
    If assertion is true but reason is false.
    D
    If the assertion and reason both are false.

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    Assertion : Zeolites are the three-dimensional network silicates. Reason : Negative charge on zeolite structure is neutralised by positively charged AI^(3+) ions.

    In SIO_2 , each silicon atom is covalently bonded in a tetrahedral manner to four oxygen and each oxygen atom in turn is covalently bonded to another two silicon atoms giving a three dimensional network solid.Find the total number of atoms comprising each ring forming the three dimensional network solid .

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