The Solid State - Result Question 19

####19. AB crystallizes in a body centred cubic lattice with edge length ’ a ’ equal to 387pm. The distance between two oppositely charged ions in the lattice is :

[2010]

(a) 335pm

(b) 250pm

(c) 200pm

(d) 300pm

Show Answer

Solution:

  1. (a) For bcc lattice, diagonal =a3.

The distance between the two oppositely charged ions =a23

=387×1.7322≃335pm

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