Home
Class 11
CHEMISTRY
CsBr crystallise in a body centred cubic...

`CsBr` crystallise in a body centred cubic lattice. The unit cell length is 436.6 pm. Given that the atomic mass of Cs = 133 and that of Br = 80 amu and Avogadro number being `6.02xx1023 mol^(-1)`, the density of `CsBr` is

A

`8.25g//cm^(3)`

B

`4.25g//cm^(3)`

C

`0.425g//cm^(3)`

D

`42.5g//cm^(3)`

Text Solution

Verified by Experts

The correct Answer is:
B
`d=(ZtimesM)/(a^(3)timesN_(A)times10^(-30))`
=`(1times(133+80))/((436.61)^(3)times(6.02times20^(23))times10^(-30))`
`4.25 g //cm^(3)`
(CsBr contains, one formula unit per unit cell)
Promotional Banner

Similar Questions

Explore conceptually related problems

CsBr crystallises in a body - centred cubic lattice. The unit cell length is 436.6 p m . Given that : the atomic mass of Cs=133 and that of Br=80 am u and Avogadro's number being 6.02xx10^(23)mol^(-1) , the density of CsBr is :

CsBr crystallises in a body - centred cubic lattice. The unit cell length is 420 p m . Given that : the atomic mass of Cs=133 and that of Br=80 am u and Avogadro's number being 6.02xx10^(23)mol^(-1) , the density of CsBr is :

Copper crystallises in face-centred cubic lattice with a unit cell length of 361 pm. What is the radius of copper atom in pm?

A metal crystallizes in a body-centred cubic lattice with the unit cell length 320 pm. The radius of the metal atom (in pm) will be

A metal crystallises with a body-centred cubic lattice. The edge length of the unit cell is 360 pm. Radius of the metal atom is

A metal crystallizes with a body-centred cubic lattice. The length of the unit cell edge is found to be 265 pm. Calculate the atomic radius.

Chromium metal crystallizes in a body centred cubic lattice. The length of the unit cell edge is found to be 287 pm. Calculate the atomic radius of chromium.

Potassium crystallizes in a body centred cubic lattice. Calculate the number of unit cells in 1 g potassium. Atomic mass of potassium=39 u.

Sodium crystallises in body centred cubic unit cell. What is the approximate number of unit cells in 4.6 g of sodium ? Given that the atomic mass of sodium is 23 g mol^(-1) .

Copper crystallizes in a face centred cubic lattice. Calculate the number of unit cells in 1.2g of copper. Atomic mass of copper = 63.54.