The correct statement regarding defects in solids is
Show Hint
Recall the types of point defects around an atom or particle in the crystals
- Frenkel defect is usually favoured by a very small difference in the sizes of cation and anion
- Frenkel defect is a dislocation defect
- Trapping of an electron in the lattice leads to the formation of F-centre
- Schottky defects have no effect on the physical properties of solids
The Correct Option is B
Approach Solution - 1
Frenkel defect is favored by a large difference in the size of cations and anions. When an ion is missing from its normal position and occupies an interstitial site between the lattice points, Frenkel defect arises, hence it is a dislocation defect.
The electrons trapped in anion vacancies are referred to as \(F\) -centers
Schottky defects arise when some atoms or ions are missing from their normal lattice points. Due to the presence of a large number of vacancies in crystals, their density (i.e., physical property) is lowered.
Discover More from Chapter: Imperfections in Solids
Approach Solution -2
The Correct Answer is (B)
Real Life Applications
1. Glass is very brittle due to the lack of a regular crystal lattice. These defects in the glass act as stress concentrators, which lead to cracks.
2. The presence of single vacancy defects in semiconductors creates donor or acceptor atoms.
3. Metals are ductile materials, and the presence of defects like grain boundaries reduces the strength of a metal.
Question can also be asked as
1. Which of the following statements about defects in solids is correct?
2. What are the effects of defects in solids?
3. How do defects in solids affect the properties of materials?
4. What are the different types of defects in solids?
Approach Solution -3
The Correct Answer is (B)
Point defects are the defects that occur around an atom or particle in the crystals. These defects occur only at or around a single lattice point.
Types of Point Defects
- Stoichiometric Defects: The point defects in a crystal that do not disturb the stoichiometry of the solid are known as Stoichiometric defects also called intrinsic or thermodynamic defects.
- Schottky Defect: These defects arise when some atoms or ions are missing from their normal lattice points.
- Frenkel Defect: These defects arise due to the missing ions from their normal position and occupy an interstitial site between the lattice points.
- Impurity Defect: Impurity defects are caused by foreign atoms settling into the solid's interstices or replacing some solid atoms.
- Non-Stoichiometric Defect: Non-stoichiometric defects are point defects in which anion and cation proportions are not equal, and large numbers of negative and positive charges are visible.
Top Questions on The solid state
- Which of the following material is not a semiconductor.
- JEE Main - 2024
- Chemistry
- The solid state
- In a metal deficient oxide sample, MXY2O4(M and Y are metals), M is present in both +2 and +3 oxidation states and Y is in +3 oxidation state. If the fraction of M2+ ions present in M is \(\frac{1}{3}\), the value of X is______.
- JEE Advanced - 2024
- Chemistry
- The solid state
A cubic solid is made up of two elements $X$ and $Y$ Atoms of $X$ are present on every alternate corner and one at the enter of cube $Y$ is at $\frac{1}{3} td$ of the total faces The empirical formula of the compound is
- JEE Main - 2023
- Chemistry
- The solid state
- A metal 𝑀 forms hexagonal close-packed structure. The total number of voids in 0.02 mol of it is _______ $×10^{21}$. (Nearest integer).
( Given $N_A=6.02×10^{23}$)- JEE Main - 2023
- Chemistry
- The solid state
- Match List I with List II
List-I
List-II
(A) Hexagonal (I) ∝ ≠ β ≠ γ ≠ 90° (B) Orthorhombic (II) ∝ = γ = 90°, β ≠ 90° (C) Triclinic (III) ∝ = β = 90°, γ = 120° (D) Monoclinic (IV) ∝ = β = γ = 90°
Choose the correct answer from the options given below:- CUET (UG) - 2023
- Chemistry
- The solid state
Questions Asked in JEE Advanced exam
- Consider the ellipse \(\frac{x^2}{9}+\frac{y^2}{4}=1\). Let S (p, q) be a point in the first quadrant such that \(\frac{p^2}{9}+\frac{q^2}{4}>1\). Two tangents are drawn from S to the ellipse, of which one meets the ellipse at one end point of the minor axis and the other meets the ellipse at a point T in the fourth quadrant. Let R be the vertex of the ellipse with positive x-coordinate and Obe the center of the ellipse. If the area of the triangle △ORT is \(\frac{3}{2}\) , then which of the following options is correct ?
- JEE Advanced - 2024
- Conic sections
- Among V(CO)6, Cr(CO)5, Cu(CO)3, Mn(CO)5, Fe(CO)5, [Co(CO)3]3-, [Cr(CO)4]4-, and Ir(CO)3, the total number of species isoelectronic with Ni(CO)4 is _________.
[Given, atomic number: V = 23, Cr=24, Mn 25, Fe 26, Co 27, Ni 28, Cu = 29, Ir = 77]- JEE Advanced - 2024
- Isomerism in Coordination Compounds
- Let \(\overrightarrow{OP}=\frac{\alpha-1}{\alpha}\hat{i}+\hat{j}+\hat{k},\overrightarrow{OQ}=\hat{i}+\frac{\beta-1}{\beta}\hat{j}+\hat{k}\) and \(\overrightarrow{OR}=\hat{i}+\hat{j}+\frac{1}{2}\hat{k}\) be three vector where α, β ∈ R - {0} and 0 denotes the origin. If \((\overrightarrow{OP}\times\overrightarrow{OQ}).\overrightarrow{OR}=0\) and the point (α, β, 2) lies on the plane 3x + 3y - z + l = 0, then the value of l is _______.
- JEE Advanced - 2024
- Vector Algebra
- A closed vessel contains 10 g of an ideal gas X at 300 K, which exerts 2 atm pressure. At the same temperature, 80 g of another ideal gas Y is added to it and the pressure becomes 6 atm. The ratio of root mean square velocities of X and Y at 300 K is
- JEE Advanced - 2024
- States of matter
- Let the function \(f:[1,\infin)→\R\) be defined by
\(f(t) = \begin{cases} (-1)^{n+1}2, & \text{if } t=2n-1,n\in\N, \\ \frac{(2n+1-t)}{2}f(2n-1)+\frac{(t-(2n-1))}{2}f(2n+1) & \text{if } 2n-1<t<2n+1,n\in\N. \end{cases}\)
Define \(g(x)=\int\limits_{1}^{x}f(t)dt,x\in(1,\infin).\) Let α denote the number of solutions of the equation g(x) = 0 in the interval (1, 8] and \(β=\lim\limits_{x→1+}\frac{g(x)}{x-1}\). Then the value of α + β is equal to _____.- JEE Advanced - 2024
- Integral Calculus
Concepts Used:
Solid State
Solids are substances that are featured by a definite shape, volume, and high density. In the solid-state, the composed particles are arranged in several manners. Solid-state, in simple terms, means "no moving parts." Thus solid-state electronic devices are the ones inclusive of solid components that don’t change their position. Solid is a state of matter where the composed particles are arranged close to each other. The composed particles can be either atoms, molecules, or ions.
Types of Solids:
Based on the nature of the order that is present in the arrangement of their constituent particles solids can be divided into two types;
- Amorphous solids behave the same as super cool liquids due to the arrangement of constituent particles in short-range order. They are isotropic and have a broad melting point (range is about greater than 5°C).
- Crystalline solids have a fixed shape and the constituent particles are arranged in a long-range order.