Practice Book for MHT-CET Chemistry (Physical Chemistry 2)>Chapter 1 - Solid State>TOPICWISE QUESTIONS>Q 45

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$CsBr$ crystallizes in a body-centred cubic lattice. The unit-cell's edge length is $436.6 pm$ . Given that the atomic mass of $Cs = 133$ , $Br = 80$ $amu$ and Avogadro's number being $6.02 \times 10^{23}$ , the density of $CsBr$ is:

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Important Questions on Solid State

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Practice Book for MHT-CET Chemistry (Physical Chemistry 2)>Chapter 1 - Solid State>TOPICWISE QUESTIONS>Q 46

A substance

A_{x} B_{y}

crystallizes in a face-centred cubic lattice in which atoms

A

occupy each corner of the cube and atoms

B

occupy the centre of each face of the cube. The composition of

A_{x} B_{y}

is

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Practice Book for MHT-CET Chemistry (Physical Chemistry 2)>Chapter 1 - Solid State>TOPICWISE QUESTIONS>Q 47

How many unit cells are present in a cubic shaped ideal crystal of

NaCl

of mass

1.0 g ?

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Practice Book for MHT-CET Chemistry (Physical Chemistry 2)>Chapter 1 - Solid State>TOPICWISE QUESTIONS>Q 48

An ionic compound has a unit cell consisting of

A

ions at the corners of a cube and

B

ions on the centres of the faces of the cube. The empirical formula of this compound is

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Practice Book for MHT-CET Chemistry (Physical Chemistry 2)>Chapter 1 - Solid State>TOPICWISE QUESTIONS>Q 49

In mineral

{MX}_{2}, M^{2 +}

occupies

CCP

lattice points and

X

occupies the tetrahedral voids. The number of cations and anions per unit cell, the coordination number of cation and percentage of tetrahedral voids occupied are

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Practice Book for MHT-CET Chemistry (Physical Chemistry 2)>Chapter 1 - Solid State>TOPICWISE QUESTIONS>Q 50

In a cubic closed packed structure of mixed oxides, the lattice is made up of oxides ions,

20 %

of tetrahedral voids are occupied by divalent

X^{2 +}

ions and

50 %

of the octahedral voids are occupied by trivalent

Y^{3 +}

ions. The formula of the oxide is

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Practice Book for MHT-CET Chemistry (Physical Chemistry 2)>Chapter 1 - Solid State>TOPICWISE QUESTIONS>Q 51

How many effective

{Na}^{+}

and

{Cl}^{-}

ions are present, respectively, in a unit cell of

NaCl

solid (rock salt structure), if ions along the line connecting opposite face centres are absent?

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Practice Book for MHT-CET Chemistry (Physical Chemistry 2)>Chapter 1 - Solid State>TOPICWISE QUESTIONS>Q 52

Which of the following is correct?

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Practice Book for MHT-CET Chemistry (Physical Chemistry 2)>Chapter 1 - Solid State>TOPICWISE QUESTIONS>Q 53

The presence of

F ‐

centres in a crystal makes it