Home
Class 12
CHEMISTRY
Lithium has a bcc structure .Its density...

Lithium has a bcc structure .Its density is `530 kg m^(-3)` and its atomic mass is `6.94 g mol^(-1)` .Calculate the edge length of a unit cell of lithium metal `(N_(A) = 6.02 xx 10^(23) mol^(-1))`

A

264 pm

B

154 pm

C

352 pm

D

322 pm

Text Solution

Verified by Experts

The correct Answer is:
C
According to the formula
`d=(ZM)/(N_A xx a^3)` For bcc, Z = 2
`=(2xx 6.94xx10^(-3))/(6.022xx10^(23)xx a^3)`
`a^3= 43.5 xx 10^(-30)` = 352 pm
Promotional Banner

Topper's Solved these Questions

  • THE SOLID STATE

    PHYSICS WALLAH|Exercise Level-2|30 Videos

  • THE S-BLOCK ELEMENTS

    PHYSICS WALLAH|Exercise NEET PAST 5 YEARS QUESTIONS|24 Videos

  • THERMODYNAMICS

    PHYSICS WALLAH|Exercise NEET PAST 5 YEARS QUESTIONS|10 Videos

Similar Questions

Explore conceptually related problems

Lithium metal has a body centred cubic structure. Its density is 0.53 g cm^(-3) and its molar mass is 6.94 g mol^(-1) . Calculate the edge length of a unit cell of Lithium metal

Lithium having a body centered cubic. Its density is 0.53 g cm^(-3) and its atomic mass is 7.00 g "mol"^(-4) . The edge length of unit cell of lithium metal is (Given: root(3)(43.7) = 3.53)

An element having bcc geometry has atomic mass 60 g mol^(-1) . Calculate the density of unit cell if edge length is 300 pm.