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Statement-1 :Schottky type of defect is ...

Statement-1 :Schottky type of defect is shown by crystals with high co-ordination numbers .
Statement-2 :In Schottky defect , equal number of cations and anions are missing from their lattice sites

A

Statement-1 is true, statement-2 is true, statement-2 is a correct explanation for statement-1

B

Statement-1 is true, statement-2 is true, statement-2 is not correct explanation for statement-1

C

Statement-1 is true, statement-2 is false

D

Statement-1 is false, statement-2 is true

Text Solution

Verified by Experts

The correct Answer is:
B
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Statement : Schottky defect is generally shown by the compounds with high co - ordination no. Explanation : Equal no. of cations and anions are missing from the lattice sites in Schottky defect.

Frenkel defect is shown by crystals having…… coordination number and ………. Difference in the size of the cations and the anions.

Knowledge Check

  • Frenkel defect is shown by crystals having ...... coordination number

    A
    low
    B
    High
    C
    both
    D
    None

  • Assertion (A) : The density of crystal having Schottky defect is lowered. Reason (R ) : The crystals suffering from Schottky defect have same number of cation and anions missing from their normal lattice sites.

    A
    If both `(A)` and `(R)` are correct, and `(R)` is the correct explanation of `(A)`
    B
    If both `(A)` and `(R)` are correct, but `(R)` is not the correct explanation of `(A)`
    C
    If `(A)` is correct, but `(R)` is incorrect.
    D
    If both `(A)` is incorrect, but `(R)` is correct.

  • A : In Schottky defect, density of crystal decreases. R : Equal number of cations and anions are missing in Schottky defect.

    A
    If both Assertion & Reason are true and the reason is the correct explanation of the assertion then mark (1)
    B
    If both Assertion & Reason are true but the reason is not the correct explanation of the assertion, then mark (2)
    C
    If Assertion is true statement but Reason is false then mark (3)
    D
    If both Assertion and Reason are false statements, then mark (4)

    • Similar Questions

    Explore conceptually related problems

    Frenkel defect is shown by crystals having __________ coordination number and ___________difference in the size of the cations and the anions.

    Predict the structure of MgO crystal and the co-ordination number of the cation in which the radii of the cation and anion are 65 pm and 140 pm respectively.

    Statement -1. In any ionic solid, [ MX], with Schottky defects, the number of positive and negative ions are same. Statement -2. Equal number of cation and anion vacancies are present .

    Which among the following statement is true about Schottky defect ?

    Statement-1: In any ionic solid, [MX] , with Schottky defects, the number of positive and negative ions are same. Statement-2:Equal number of cation and anion vacancies are present.

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