Question
in a crystal A2B3 ATOMS B ARE IN CCP ARRANGMT. & ATOMS A ARE IN TETRAHEDRAL VOIDS . THE FRACTN OF TETRAHEDRAL VOIDS ARE OCCUPIED IS ----?
Joshi sir comment
B atom forms ccp, let No. of atoms of B = 1
no. of tetrahedral voids = 2
but formula given is A2/3B
so % of voids occupied = (2/3)*100/2 = 33.34 %
Read 1 Solution.
B forms ccp ( means fcc) hence it must contain 4 atoms , hence by equating the ratios u get , 2/3 = x/4 => x= 8/3 , which means that (8/3)/8 = 1/3 of the t. voids are occupied
Best SolutionAMIT DAS 12 year ago
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