EASY

Earn 100

Express the coordination number of the simple cubic unit cell.

Important Questions on Solid State

EASY

Chemistry>Physical Chemistry>Solid State>Unit Cells, Two and Three Dimensional Lattices

The radius of an atom is

300 pm .

If it crystallizes in a face-centered cubic lattice, the length of the edge of the unit cell is:

MEDIUM

Chemistry>Physical Chemistry>Solid State>Unit Cells, Two and Three Dimensional Lattices

Sodium metal crystallizes in a body centred cubic lattice with a unit cell edge of

4.29 Å

. The radius of sodium atom is approximately:

MEDIUM

Chemistry>Physical Chemistry>Solid State>Unit Cells, Two and Three Dimensional Lattices

Edge length of a cube is

300 pm

. Its body diagonal would be

MEDIUM

Chemistry>Physical Chemistry>Solid State>Unit Cells, Two and Three Dimensional Lattices

A given metal crystallises out with a cubic structure having edge length of

361 pm

. If there are four metal atoms in one unit cell, what is the radius of one atom?

MEDIUM

Chemistry>Physical Chemistry>Solid State>Unit Cells, Two and Three Dimensional Lattices

An element has a body centered cubic (bcc) structure with a cell edge of

288 pm

. The atomic radius is

MEDIUM

Chemistry>Physical Chemistry>Solid State>Unit Cells, Two and Three Dimensional Lattices

A certain element crystallises in a bcc lattice of unit cell edge length 27 $\overset{o}{A}$ . If the same element under the same conditions crystallises in the $fcc$ lattice, the edge length of the unit cell in $\overset{o}{A}$ will be __________. (Round off to the Nearest Integer).

[Assume each lattice point has a single atom]

[Assume $\sqrt{3} = 1.73, \sqrt{2} = 1.41$ ]

EASY

Chemistry>Physical Chemistry>Solid State>Unit Cells, Two and Three Dimensional Lattices

What is the packing efficiency of

fcc

crystal structure?

MEDIUM

Chemistry>Physical Chemistry>Solid State>Unit Cells, Two and Three Dimensional Lattices

A metal crystallizes with a

FCC

-lattice, the edge of whose unit cell is

xpm

. The diameter of this metal atom would be

p m .

MEDIUM

Chemistry>Physical Chemistry>Solid State>Unit Cells, Two and Three Dimensional Lattices

In a face-centered cubic arrangement of

A

and

B

atoms, where

A

atoms are at the corners of the unit cell and

B

atoms are at the face center, two

A

atoms are missing. The simplest formula for this compound is ________

MEDIUM

Chemistry>Physical Chemistry>Solid State>Unit Cells, Two and Three Dimensional Lattices

A metal crystallises in face centred cubic structure with metallic radius

\sqrt{2} A °

. The volume of the unit cell (in

m^{3}

) is

EASY

Chemistry>Physical Chemistry>Solid State>Unit Cells, Two and Three Dimensional Lattices

A metal crystallizes with face centred cubic lattice. The edge of the unit cell is

408 pm .

The diameter of the metal atom is

EASY

Chemistry>Physical Chemistry>Solid State>Unit Cells, Two and Three Dimensional Lattices

a

the length of the side of a cube, the distance between the body centered atom one corner atom in the cube will be

EASY

Chemistry>Physical Chemistry>Solid State>Unit Cells, Two and Three Dimensional Lattices

Diamond has a three dimensional structure of

C

atoms formed by covalent bonds. The structure of diamond has face centred cubic lattice where

50 %

of the tetrahedral voids are also occupied by carbon atoms. The number of carbon atoms present per unit cell of diamond is ________.

EASY

Chemistry>Physical Chemistry>Solid State>Unit Cells, Two and Three Dimensional Lattices

The coordination number of an atom in a body-centered cubic structure is______

[Assume that the lattice is made up of atoms.]

EASY

Chemistry>Physical Chemistry>Solid State>Unit Cells, Two and Three Dimensional Lattices

Cu

crystallizes as face centred cubic lattice with edge length of

3.56 \overset{°}{A}

. What will be the nearest distance between

Cu

atoms?

EASY

Chemistry>Physical Chemistry>Solid State>Unit Cells, Two and Three Dimensional Lattices

The radius of sodium atom isfs

1 .857 \times 10^{- 8} cm

. If sodium crystal is a body centred, then the edge length of unit cell is

MEDIUM

Chemistry>Physical Chemistry>Solid State>Unit Cells, Two and Three Dimensional Lattices

If the radii of

{Na}^{+}

and

{Cl}^{-}

ions are

95 pm

and

181 pm

respectively, then the edge length of a

NaCl

unit cell is

MEDIUM

Chemistry>Physical Chemistry>Solid State>Unit Cells, Two and Three Dimensional Lattices

Sodium crystallizes in bcc structure with radius

1.86 \times 10^{- 8} cm

. What is the edge length of unit cell of sodium?

MEDIUM

Chemistry>Physical Chemistry>Solid State>Unit Cells, Two and Three Dimensional Lattices

A cubic solid is made of two elements

P

and

Q

. Atom of

Q

are at the corners of the cube and

P

at the body centre. What is the formula of the compound? What are the coordination numbers of

P

and

Q

EASY

Chemistry>Physical Chemistry>Solid State>Unit Cells, Two and Three Dimensional Lattices

A metal crystallizes in a face centred cubic structure. If the edge length of its unit cell is

' a'

, the closest approach between two atoms in the metallic crystal will be

Express the coordination number of the simple cubic unit cell.

Important Questions on Solid State

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