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The total number of elements of symmetry in a cubic crystal is

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Important Questions on Solid State

HARD

Chemistry>Physical Chemistry>Solid State>X-Ray Crystallography

The CORRECT statement(s) for cubic close packed (ccp) three dimensional structure is (are)

EASY

Chemistry>Physical Chemistry>Solid State>X-Ray Crystallography

Bragg's law is given by the which of the following equations?

EASY

Chemistry>Physical Chemistry>Solid State>X-Ray Crystallography

What are two types of crystal structures shown by ice at different pressures?

EASY

Chemistry>Physical Chemistry>Solid State>X-Ray Crystallography

A compound formed by elements

X

and

Y

crystallises in the cubic structure, where

X

atoms are at the corners of a cube and

Y

atoms are at the centre of the body. The formula of the compounds is

EASY

Chemistry>Physical Chemistry>Solid State>X-Ray Crystallography

Element

B

forms ccp structure and

A

occupies half of the octahedral voids, while oxygen atoms occupy all the tetrahedral voids. The structure of bimetallic oxide is:

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Chemistry>Physical Chemistry>Solid State>X-Ray Crystallography

A compound is formed by atoms

{}^{'}A^{'}

and

{}^{'}B^{'}

B

atoms form

ccp

arrangement. If

A

occupy

\frac{1}{3}

of tetrahedral voids, what is the formula of the compound?

MEDIUM

Chemistry>Physical Chemistry>Solid State>X-Ray Crystallography

A compound is formed by elements of

X, Y

and

Z

. Atoms of

Z

(anions) make

FCC

lattice. Atoms of

X

(cations) occupy all the octahedral voids. Atoms of

Y

(cations) occupy

\frac{1}{3} rd

of the tetrahedral voids. The formula of the compound is:

EASY

Chemistry>Physical Chemistry>Solid State>X-Ray Crystallography

An ionic compound has a unit cell constituting of

A

ions at the corners of a cube and

B

ions on the centres of the faces of the cube. The empirical formula for the compound would be

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Chemistry>Physical Chemistry>Solid State>X-Ray Crystallography

The ratio of number of atoms present in a simple cubic, body centered cubic and face centered cubic structure are, respectively :

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Chemistry>Physical Chemistry>Solid State>X-Ray Crystallography

How many total constituent particles are present in simple cubic unit cell?

MEDIUM

Chemistry>Physical Chemistry>Solid State>X-Ray Crystallography

A compound is formed from elements

X

and

Y

. The atoms of

Y

(anions) form a

ccp

lattice. The atoms of

X

(cations) occupy half of the octahedral voids and half of tetrahedral voids. What is the formula of the compound?

HARD

Chemistry>Physical Chemistry>Solid State>X-Ray Crystallography

If the angle of incidence of X-ray of wavelength

3 Å

which produces a second order diffracted beam from the

(100)

planes in a simple cubic lattice with interlayer spacing

a = 6 Å i s 30^{o},

the angle of incidence that produces a first - order diffracted beam from the

(200)

planes is

EASY

Chemistry>Physical Chemistry>Solid State>X-Ray Crystallography

In the face centred cubic lattice structure of gold the closest distance between gold atoms is (

{}^{'}a^{'}

being the edge length of the cubic unit cell)

HARD

Chemistry>Physical Chemistry>Solid State>X-Ray Crystallography

NaCl

is a

FCC

lattice where

{Na}^{+}

ions are at corner and face centre positions. Chloride ions are at edge centres and body centre positions. How many

NaCl

formula units will be in an unit cell

EASY

Chemistry>Physical Chemistry>Solid State>X-Ray Crystallography

F . C . C .

the cell is shared equally by how many unit cells?

HARD

Chemistry>Physical Chemistry>Solid State>X-Ray Crystallography

A compound is formed by two elements

M

and

N .

Element

N

forms hexagonal closed pack array with

2 / 3

of the octahedral holes occupied by

M .

The formula of the compound is:

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Chemistry>Physical Chemistry>Solid State>X-Ray Crystallography

A crystalline solid has

A

-ions at the corners and face centres where as

B^{+}

ions are at the body centre and edge centres of the unit cell. The sim ple formula of the compound will be

HARD

Chemistry>Physical Chemistry>Solid State>X-Ray Crystallography

The cubic unit cell structure of a compound containing cation $M$ and anion $X$ is shown below. When compared to the anion, the cation has smaller ionic radius. Choose the correct statement(s).

Question Image

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Chemistry>Physical Chemistry>Solid State>X-Ray Crystallography

In a face centered cubic lattice atoms A are at the corner points and atoms B at the face centered points. If atom B is missing from one of the face centered points, the formula of the ionic compound is :

EASY

Chemistry>Physical Chemistry>Solid State>X-Ray Crystallography

Which primitive unit cell has unequal edge lengths

(a \neq b \neq c)

and all axial angles different from

90^{o}

The total number of elements of symmetry in a cubic crystal is

Important Questions on Solid State

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