EASY

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What is coordination number? Give the coordination number of the simple cubic lattice.

Important Questions on The Solid State

EASY

Chemistry>Physical Chemistry>The Solid State>Close Packed Structures And Packing Efficiency

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>The Solid State>Close Packed Structures And Packing Efficiency

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>The Solid State>Close Packed Structures And Packing Efficiency

Edge length of a cube is

300 pm

. Its body diagonal would be

MEDIUM

Chemistry>Physical Chemistry>The Solid State>Close Packed Structures And Packing Efficiency

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>The Solid State>Close Packed Structures And Packing Efficiency

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

288 pm

. The atomic radius is

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Chemistry>Physical Chemistry>The Solid State>Close Packed Structures And Packing Efficiency

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>The Solid State>Close Packed Structures And Packing Efficiency

What is the packing efficiency of

fcc

crystal structure?

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Chemistry>Physical Chemistry>The Solid State>Close Packed Structures And Packing Efficiency

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>The Solid State>Close Packed Structures And Packing Efficiency

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>The Solid State>Close Packed Structures And Packing Efficiency

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>The Solid State>Close Packed Structures And Packing Efficiency

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>The Solid State>Close Packed Structures And Packing Efficiency

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>The Solid State>Close Packed Structures And Packing Efficiency

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>The Solid State>Close Packed Structures And Packing Efficiency

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

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

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Chemistry>Physical Chemistry>The Solid State>Close Packed Structures And Packing Efficiency

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>The Solid State>Close Packed Structures And Packing Efficiency

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>The Solid State>Close Packed Structures And Packing Efficiency

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>The Solid State>Close Packed Structures And Packing Efficiency

Sodium crystallizes in bcc structure with radius

1.86 \times 10^{- 8} cm

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

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Chemistry>Physical Chemistry>The Solid State>Close Packed Structures And Packing Efficiency

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>The Solid State>Close Packed Structures And Packing Efficiency

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

What is coordination number? Give the coordination number of the simple cubic lattice.

Important Questions on The Solid State

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