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Statement I: In any ionic solid [MX] wit...

Statement I: In any ionic solid `[MX]` with Schottky defect, the number of positive and negative ions are same.
Statement II: An equal number of cation and anion vacancies is present.

A

Statement-1 is True, Statement-2 is True and Statement-2 is a correct explanation for Statement-1

B

Statement-1 is True, Statement-2 is True and Statement-2 is NOT a 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

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To solve the question, we need to analyze both statements regarding an ionic solid with a Schottky defect. ### Step-by-Step Solution: 1. **Understanding Schottky Defect**: - A Schottky defect occurs in ionic solids when an equal number of cations and anions are missing from their lattice sites. This defect maintains the overall charge neutrality of the solid. 2. **Analyzing Statement I**: ...
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In the following question, a statement of assertion is followed by a statement of reason. Mark the correct choice. Assertion : In any ionic solid [MX] with schottky defects, the number of positive and negative ions are same. Reason : Equal number of cation and aniojn vacancies are present .

Any deviation from the perfectly ordered arrangement constitutes a defect or imperfection. The compounds in which the number of irregularity are present in the arrangement of atoms or ions are called atomic imperfections or point defects. These may be stochiometric or non - stoichlometric. Stoichiometric defects are further classified into Schottky defects in which number of positive and negative ions are missing in equal ratio and Frenkel defects in which an ion leaves its correct lattice sites and occupies on interstitial site. Schottky defect is more common in ionic compounds with high co-ordination number and where the size of positive and negative ions are almost equal, while in Frenkel defects are common in ionic compounds, which have low co-ordination number and in which there is large difference in size between positive and negative ions. Which of the following defect, if present, lowers the density of the crystal ?

Any deviation from the perfectly ordered arrangement constitutes a defect or imperfection. The compounds in which the number of irregularity are present in the arrangement of atoms or ions are called atomic imperfections or point defects. These may be stochiometric or non - stoichlometric. Stoichiometric defects are further classified into Schottky defects in which number of positive and negative ions are missing in equal ratio and Frenkel defects in which an ion leaves its correct lattice sites and occupies on interstitial site. Schottky defect is more common in ionic compounds with high co-ordination number and where the size of positive and negative ions are almost equal, while in Frenkel defects are common in ionic compounds, which have low co-ordination number and in which there is large difference in size between positive and negative ions. In a crystal some ions are missing from normal sites. This is an example of

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

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

Statement I The number of solution of the equation |sin x|=|x| is only one. Statement II |sin x| ge 0 AA x in R .

Identify the incorrect match wr.t. coordination number of cation and anion in the given ionic solids.

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.

Statement-I : 2p orbitals do not have spherical nodes. Because Statement-II : The number of spherical nodes in p-orbitals is given by (n-2)

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.

VMC MODULES ENGLISH-THE SOLID STATE-LEVEL-2
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  3. Statement I: In any ionic solid [MX] with Schottky defect, the number ...

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  4. Titanium (II) oxide has a rock salt structures. X-ray diffraction data...

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  5. Titanium (II) oxide has a rock salt structures. X-ray diffraction data...

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  6. A crystal is made up of particals X, Y, and Z. X froms fcc packing. Y ...

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  7. Frenkel defect is caused due to

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  8. What is the maximum number of layers of atom in close-packed planes th...

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  9. Analysis show that nickel oxide consists of nickel ion with 96% ions h...

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  10. In the fluorite structure if the radius ratio is (sqrt(3/(2))-1) how m...

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  11. Following three planes (P1, P2, P3) in an FCC unit cell are shown. Con...

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  12. In a cubic,A atoms are present on alternative corners, B atoms are pre...

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  13. For the spinel structure (MgAl(2)O(4)), the correct statement is//are

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  14. In a unit cell, atoms (A) are present at all corner lattices, (B) are ...

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  15. In a unit cell, atoms (A) are present at all corner lattices, (B) are ...

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  16. In a unit cell, atoms (A) are present at all corner lattices, (B) are ...

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  17. If the lattice parameter of Si = 5.43 Å and the mass of Si atom is 28....

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  18. The lacttice parameter of GaAs (radius of Ga = 1.22 Å, As = 1.25 Å) is

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  19. In cubic ZnS (II-VI) compounds, if the radii of Zn and S atoms are 0.7...

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