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KBr crystallises in NaCl type of crystal lattice and its density is 2.75 $g / c m^{3}$ . Number of unit cells of KBr present in a 1.00 $m m^{3}$ grain of KBr are

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Important Questions on Solid State

MEDIUM

Chemistry>Physical Chemistry>Solid State>Crystal Lattice and Unit cells

The correct option for the number of body centred unit cells in all

14

types of Bravais lattice unit cells is:

EASY

Chemistry>Physical Chemistry>Solid State>Crystal Lattice and Unit cells

The parameters of the unit cell of a substance are

a = 2.5, b = 3.0, c = 4.0, α = 90 °, β = 120 ° γ = 90 ° .

The crystal system of the substance is :

EASY

Chemistry>Physical Chemistry>Solid State>Crystal Lattice and Unit cells

Which among the following is the most symmetrical crystal system?

EASY

Chemistry>Physical Chemistry>Solid State>Crystal Lattice and Unit cells

Which among the following metals crystallises as a simple cube?

HARD

Chemistry>Physical Chemistry>Solid State>Crystal Lattice and Unit cells

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>Crystal Lattice and Unit cells

A compound

M_{p} X_{q}

has cubic close packing (

ccp

) arrangement of

X

. Its unit cell structure is shown below. The empirical formula of the compound is

Question Image

EASY

Chemistry>Physical Chemistry>Solid State>Crystal Lattice and Unit cells

a, b, c

are the lengths of three edges of unit cell,

α

is the angle between side

b

and

c, β

is the angle between side

a

and

c

and

γ

is the angle between side

a

and

b,

what is the Bravais Lattice dimensions of a tetragonal crystal?

MEDIUM

Chemistry>Physical Chemistry>Solid State>Crystal Lattice and Unit cells

A match box exhibits

EASY

Chemistry>Physical Chemistry>Solid State>Crystal Lattice and Unit cells

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>Crystal Lattice and Unit cells

F . C . C .

the cell is shared equally by how many unit cells?

MEDIUM

Chemistry>Physical Chemistry>Solid State>Crystal Lattice and Unit cells

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 :

HARD

Chemistry>Physical Chemistry>Solid State>Crystal Lattice and Unit cells

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

HARD

Chemistry>Physical Chemistry>Solid State>Crystal Lattice and Unit cells

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).

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