Total volume of atoms present in a face centred cubic unit cell of a metal is ( r is atomic radius):
(A) 20/3 r3
(B) 24/3 r3
(C) 12/3 r3
(D) 16/3 r3
Select the correct statement (s)-
(a) The C.N. of cation occupying a tetrahedral hole is 4.
(b) The C.N. of cation occupying a octahedral hole is 6.
(c) In schottky defects, density of the lattice decreases,
Among the following types of voids. which one is the largest void:-
(A) Triangular system
(B) Tetragonal system
(C) Monoclinic system
The arrangement ABC ABC.. is referred to as.
(a) octahedral close packing
(b) hexagonal clase packing
(c) tetrahedral close packing
(d) cubic close packing
The ratio of cations to anion in a closed pack tetrahedral is:
(d) none of these