Silver crystallises in fcc lattice. If edge length of the cell is 4.07 × 10 - 8 c m and density is 10.5 g c m - 3 , calculate the atomic mass of silver. N A = 6 . 022 X 10 23 mol - 1

In FCC lattice, Z = 4 Edge length (a) = 4 . 07 × 10 - 8 cm Density (d) = 10 . 5 g / cm 3 Avogadro number ( N A ) = 6 . 022 × 10 23 mol - 1 d = z . M a 3 . N A Atomic mass (M) = d . ( a ) 3 . ( N A ) z = 10 . 5 × 4 . 07 × 10 - 8 3 × ( 6 . 022 × 10 23 ) 4 = 106 . 57 Therefore, the atomic mass of silver is 106 . 57 g mol - 1 .

HARD

JEE Main/Advance

IMPORTANT

Earn 100

KF Crystalizes in the $NaCl$ type structure. If the radius of $K^{+}$ ion is $132 pm$ and that of $F^{-}$ ion is $135 pm$ . Choose the correct options

50% studentsanswered this correctly

Important Questions on Solid State

HARD

JEE Main/Advance

IMPORTANT

Beta Question Bank for Engineering: Chemistry>Chapter 7 - Solid State>EXERCISE-2>Q 16

In a solid $AB$ having $NaCl$ type structure A atoms occupy the corner of the cubic unit cell and the face, centered positions. If all the face-centered atom along one of the axis are removed, choose the correct options:

(Atomic weight of $A = 40$ ),

Atomic weight of $B = 60, r_{A} = 1.4 \overset{°}{A}, r_{B} = 2.8 \overset{°}{A}$

EASY

JEE Main/Advance

IMPORTANT

Beta Question Bank for Engineering: Chemistry>Chapter 7 - Solid State>EXERCISE-3>Q 6

Match the column

Column $I$ [Distance in terms of edge length of cube $(a)$ ]		Column $II$
$(P)$	$0.866 a$	$(1)$	Shortest distance between cation $&$ anion in $CsCl$ structure.
$(Q)$	$0.707 a$	$(2)$	Shortest distance between two cation in ${CaF}_{2}$ structure.
$(R)$	$0.433 a$	$(3)$	Shortest distance between carbon atoms in diamond.
$(S)$	$1.414 a$	$(4)$	the distance at which second nearest neighbour is present in simple cubic unit cell

HARD

JEE Main/Advance

IMPORTANT

Beta Question Bank for Engineering: Chemistry>Chapter 7 - Solid State>EXERCISE-3>Q 16

A solid

A^{+} B^{-}

has

NaCl

type close packed structure. If the anion has a radius of

250 pm

, what should be the ideal radius of the cation ? Can a cation

C^{+}

having a radius of

180 pm

be slipped into the tetrahedral site of the crystal

A^{+} B^{-}

? Give reason for your answer.

HARD

JEE Main/Advance

IMPORTANT

Beta Question Bank for Engineering: Chemistry>Chapter 7 - Solid State>EXERCISE-3>Q 18

In a cubic crystal of

CsCl

(d e n s i t y = \frac{3.97 gm}{{cm}^{3}})

the eight corner are occupied by

{Cl}^{-}

ions with

{Cs}^{+}

ions at the centre. Calculate the distance between the eight surrounding

{Cs}^{+}

and

{Cl}^{-}

ions. Atomic mass of

Cs = 132.9

atomic mass of

Cl = 35.5

HARD

JEE Main/Advance

IMPORTANT

Beta Question Bank for Engineering: Chemistry>Chapter 7 - Solid State>EXERCISE-3>Q 19

The composition of a sample of wustite is

{Fe}_{0.93} O_{1.00}

. What mass percentage of iron is present in the form of

Fe (III)

ions?

MEDIUM

JEE Main/Advance

IMPORTANT

Beta Question Bank for Engineering: Chemistry>Chapter 7 - Solid State>EXERCISE-4>Q 1

The element chromium exists as a

bcc

lattice whose unit cell edge is

2.88 \overset{\circ}{A} .

The density of chromium is

\frac{7.20 g}{cc} .

How many atom does

52.0 g

of chromium contain? Atomic mass of Cr =

52

N_{A} = 6.022 X 10^{23} {mol}^{- 1}

MEDIUM

JEE Main/Advance

IMPORTANT

Beta Question Bank for Engineering: Chemistry>Chapter 7 - Solid State>EXERCISE-4>Q 2

The edge length of the unit cell of

KCl (NaCl

like structure ;

fcc)

6.28 \overset{\circ}{A} .

Assuming anion-cation contact along the cell edge, calculate the radius of the potassium ion.

(r_{Cl} = 1.8173 \overset{\circ}{A}) .

MEDIUM

JEE Main/Advance

IMPORTANT

Beta Question Bank for Engineering: Chemistry>Chapter 7 - Solid State>EXERCISE-4>Q 3

Silver crystallises in fcc lattice. If edge length of the cell is

4.07 \times 10^{- 8} c m

and density is

10.5 g {c m}^{- 3}

, calculate the atomic mass of silver.

N_{A} = 6.022 X 10^{23} {mol}^{- 1}

KF Crystalizes in the NaCl type structure. If the radius of K+ion is 132pm and that of F-ion is 135pm. Choose the correct options

Important Questions on Solid State

Learn and Prepare for any exam you want !

KF Crystalizes in the $NaCl$ type structure. If the radius of $K^{+}$ ion is $132 pm$ and that of $F^{-}$ ion is $135 pm$ . Choose the correct options