Solid StateEasy
Question
Element X crystllizes in a 12 co-ordination of fcc lattice. On applying high temperature it changes to 8 co-ordination bcc lattice. If r is the radius of atom X, then :
Options
A.Edge length of unit cell in 12 co-ordination lattice is 2√2 r
B.Edge length of unit cell in 8 co-ordination lattice is 
C.Ratio of densities before and after applying high temperature is 2(√2)3 ; (√3)3
D.All of these
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