In the fluorite structure,the coordination number of $Ca^{2+}$ ion is

Which of the following expressions is correct in the case of a $CsCl$ unit cell (edge length '$a$')?

The structure of $MgO$ is similar to that of $NaCl$. What is the coordination number of $Mg^{2+}$?

If the length of the body diagonal of a cube is $x$,then the tetrahedral void will be at a distance of ....... from the center of the cube.

The solid $AB$ has a $NaCl$ type structure. If the radius of the $A^{+}$ ion is $120 \, pm$, then the maximum radius of the $B^{-}$ ion will be ........... $pm$.

What is the coordination number of each atom in a $bcc$ structure?