Coordination Number of Atoms in Unit Cells

In a simple cubic lattice, the co-ordination number is :

In calcium fluoride, having the fluorite structure, the coordination numbers for calcium ion $\left({\mathrm{Ca}}^{2+}\right)$ and fluoride ion $\left({\mathrm{F}}^{-}\right)$ are

The co-ordination number of eight for cation is found in : 

In which of the following structures, the anion has maximum coordination number: 

In face - centred cubic lattice, a unit cell is shared equally by how many unit cells ? 

Atom ${\mathrm{P}}^{+}$ in a crystal solid are present at all octahedral voids and atom ${\mathrm{Q}}^{–}$ form ccp lattice. The nearest neighbour of ${\mathrm{P}}^{+}$ is 'x' and next nearest neighbour of ${\mathrm{Q}}^{–}$ is 'y', then what is the value of $\frac{\mathrm{x}}{\mathrm{y}}$ ?

In a solid 'AB' having rock salt arrangement ( $\mathrm{N}\mathrm{a}\mathrm{C}\mathrm{l}$ structure), 'A' atoms occupy the corners and face center of the cubic unit cell. 'B' atoms occupies all octahedral voids of the unit cell. If all the face-centered atoms along one of the axes are removed, then the resultant stoichiometry of the solid is

Arrangement of sulphide ions in Zinc blends is

Which of the following statements is not correct?

In a cubic close packing of spheres in three dimensions, the co-ordination number of each sphere is:

In a cubic close packing of spheres in three dimensions, the co-ordination number of each sphere is:

In the closest packed structure of a metallic lattice, the number of nearest neighbours of a metallic atom is:

What is the coordination number of body centred cube?

What is the coordination number of Cs⁺ in CsCl?

In a face centred cubic lattice the number of nearest neighbours for a given lattice point are :

Which kind of attractive forces are likely to be holding particles together in a substance that melts at $681 °\mathrm{C}$ and that conducts electricity when molten but not when solid?