A face centred cubic lattice of a single type of atoms has same defects and it one corner and one face centre is left unoccupied per unit cell. Calculate the packing fraction of such solid.

In a face centred cubic arangement of A and B atoms, A atoms occupy the corners and B atoms occupy the face centres of the unit cell. If one of the atoms is missing from the corner in each unit cell, what is the simplest formulat of the compound?

In a face centred lattice of X and Y, X atoms are present at the corners while Y atoms are at face centres What is the formula of the compound?

In a face centred lattice of X and Y, X atoms are present at the corners while Y atoms are at face centres What should be the formula of the compound if: one of the X atoms is missing from a corner in each unit cell.

In a face centred lattice of X and Y, X atoms are present at the corners while Y atoms are at face centres What should be the formula of the compound if: one of the X atoms from a corner is replaced by Z atoms (also monovalent)?

In a face centred lattice of X and Y, X atoms are present at the corners while Y atoms are at face centres What should be the formula of the compound if: two atoms of X are missing from the corner?

In a face centred cubic unit cell what is the volume occupied?

A face centered cubic element (atomic mass =60) has edge length of 400pm. What is the density of unit cell

Iron crystallizes in several forms. At 1185 K, the body centred cubic alpha form of iron changes to the face centred cubic gamma form of iron. Assuming that the distance between the nearest neighbours is the same in two forms at the transition temperature, calculate the ratio of the density of alpha form to that of gamma form at the transistion temperature.

In a face centered cubic arrangement of A and B atoms whose A atoms are at the corner of the unit cell and B atoms at the face centers. One of the B atoms missing from one of the face in unit cell. The simplest formula of compounding is:

In a cubic lattice of XYZ, X atoms are present at all corners except one corner whic is occupied by Y atoms. Z atoms are present at face centre. the formula of the compound is