Solid state practice · Mixed difficulty

For a given crystal, the lattice parameter ‘$a$’ is 318 pm. The $d$-spacing for a (III) plane is

The number of octahedral sites per sphere in a fcc structure is

Structure of a compound of the formula ${A}_2 {B}$ in which each ${B}^{2-}$ ions is co- ordinated by eight ${A}^{+}$ions and each ${A}^{+}$ion by four ${B}^{-}$ions is called

A compound consists of atoms $A$ and $B$ crystalizes in a cubic closed packed structure. Atoms of $A$ are located at all the corners and atoms of $B$ are at $\frac{1}{4}$th of octahedral voids. The simplest formula of the compound will be

What is the number of tetrahedral voids per atom in a crystal?

How many unit cells are present in a cube shaped ideal crystal of $\mathrm{NaCl}$ of mass 1.00g?

$\left[ {\mathrm{Atomic}\;\mathrm{ masses}:\mathrm{Na} = 23,\;\mathrm{Cl} = 35.5} \right]$

Which of the following is a covalent solid

Which substance shows antiferromagnetism?

Which is the incorrect statement

An element (atomic mass $100 {~g} / {mol}$ ) having $b c c$ structure has unit cell edge $400 {pm}$. The density of element is (no. of atoms in $b c c, Z=2$ )

Cation and anion combines in a crystal to form following type of compound

Structure of a mixed oxide is cubic close-packed (c.c.p). The cubic unit cell of mixed oxide is composed of oxide ions. One fourth of the tetrahedral voids are occupied by divalent metal $A$ and the octahedral voids are occupied by a monovalent metal $B$. The formula of the oxide is :

Which among the following is an antiferromagnetic substance?

Silver (atomic weight $= 108\;\mathrm{g}\;\mathrm{mo}{\mathrm{l}^{ - 1}}$) has a density of $10.5\;g\;\mathrm{c}{\mathrm{m}^{ - 3}}.$ The number of silver atoms on a surface of area ${10^{ - 12}}\;{\mathrm{m}^2}$ can be expressed in scientific notation as $y \times {10^x}.$ The value of $x$ is

What is the coordination number of body centred cube?

The incorrect statement about the imperfections in solids is:

Potassium fluoride has $NaCl$ type structure. What is the distance between ${K^ + }$ and ${F^ - }$ ions if cell edge is $a$ cm?

Distance between nearest cation and anion in an ionic solid is $\frac{\sqrt{3} a}{4}$ then ionic solid may be:

Analysis shows that an oxide ore of nickel has formula $\mathrm{N}{\mathrm{i}_{0.98}}{\mathrm{O}_{1.00}}$. The percentage of nickel as $\mathrm{N}{\mathrm{i}^{3 + }}$ ions is nearly

A binary solid $\left( {{A^ + }{B^ - }} \right)$ has a rock salt structure. If the edge length is 400 pm and radius of cation is 75 pm the radius of anion is :

Statement I: Schottky defect involving stoichiometric cation and anion vacancies are likely for compounds and ions of comparable size.

Statement II: Schottky defect minimise mechanical distortions and charge displacement.

The radius of $\mathrm{A}{\mathrm{g}^ + }$ ion is 126 pm while that of ${\mathrm{I}^ - }$ ion is 216 pm. The co-ordination number of $\mathrm{Ag}$ in $\mathrm{AgI}$ is :

Statement I: The electrical conductivity of a metal decreases as temperature increases.

Statement II: This impedes the flow of electrons, when an electric field is applied.

Frenkel defect is caused due to

In a cubic close packing of spheres in three dimensions, the co-ordination number of each sphere is :

The one that is extensively used as a piezoelectric material is

Which of the following solid is non-crystalline solid

Analysis shows that an oxide ore of nickel has formula $\mathrm{N}{\mathrm{i}_{0.98}}{\mathrm{O}_{1.00}}$. The percentage of nickel as $\mathrm{N}{\mathrm{i}^{3 + }}$ ions is nearly

In a fcc lattice $A, B, C$ and $D$ atoms are arranged at corners, face centres octahedral voids and half of tetrahedral voids respectively and if the crystal deposited is defected such that all the particles at one body diagonal of each unit cell are missing, correspondingly then what is the resulted formula of the compound?

The substance which possesses zero resistance as 0 K :