In a close packed structure there are N- spheres, how many tetrahedral voids are associated with them ?

In a close packed structure, there are M- spheres, how many octahedral voids are associated with them ?

In a close packed structure, there are P- spheres, how many voids (total) are associated with them

How many sub-shells are associated with n = 4 ?

In a hexagonal close packed (hcp) structure of spheres, the fraction of the volume occupied by the sphere is A. In a cubic close packed structure the fraction is B. The relation for A and B is:

The density of apure substance 'A' whose atoms are in cubic close pack arragement is 1 g//c c . If the all the tetrahedral voids are occupied by 'B' atom , What is the density of resulting solid in g//c c .[ "Atomic mass" = (A)= 30 g//"mol" and atomic mass (B)= 50 g//"mol" ]

In the spinel structur, oxides ions are cubical-closet packed whereas 1/8th of tetrahedral voids are occupied by A^(2+) cation and 1/2 of octahedral voids are occupied by B^(+) cations. The general formula of the compound having spinel structure is:

In a compound, nitrogen atoms make cubic close packed lattice and metal atoms (M) occupy one-third of the tetrahedral voids present. Determine the formula of the compound formed by M and N?

In a cubic close packed structure of mixed oxides, the lattice is made up of oxide ions, one eigth of the tetrahedral voids are occupied by divalent ions (A^(2+)) while one half of octrahedral voids are occupied by trivalent ions (B^(3+)) . What is the formula of the oxide?

Br^- ions from a close packed structure. If the radius of Br^- ion is 195 pm, calculate the radius of the cation that just fits into the tetrahedral hole. Can a cation having a radius of 82 pm be slipped into the octahedral hole of the crystal A^+Br^- ?