EASY

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How many octahedral and tetrahedral holes are present per unit cell in a face centred cubic arrangement of atoms?

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Important Questions on Solid State

MEDIUM

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

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

EASY

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

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:

EASY

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

a

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

MEDIUM

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

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>Crystal Lattice and Unit cells

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>Crystal Lattice and Unit cells

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>Crystal Lattice and Unit cells

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

EASY

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

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

EASY

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

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

EASY

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

In a cubic close packed structure, fractional contributions of an atom at the corner and at the face in the unit cell are, respectively -

MEDIUM

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

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 ________

EASY

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

Which primitive unit cell has unequal edge lengths

(a \neq b \neq c)

and all axial angles different from

90^{o}

MEDIUM

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

A metal crystallises in face centred cubic structure with metallic radius

\sqrt{2} A °

. The volume of the unit cell (in

m^{3}

) is

MEDIUM

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

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

MEDIUM

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

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>Crystal Lattice and Unit cells

What is the packing efficiency of

fcc

crystal structure?

MEDIUM

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

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>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 :

MEDIUM

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

A mineral consists of a cubic close-packed structure formed by

O^{2 -}

ions where half the octahedral voids are occupied by

A l^{3 +}

and one-eighth of the tetrahedral voids are occupied by

M n^{2 +}

. The chemical formula of the mineral is

HARD

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

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

How many octahedral and tetrahedral holes are present per unit cell in a face centred cubic arrangement of atoms?

Important Questions on Solid State

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