An $AB_2$ type structure is found in

What is the volume occupied by particles in $BCC$ structure if '$a$' is the edge length of the unit cell?

An ionic compound $AB$ has $ZnS$ type structure. If the radius of $A^{+}$ is $22.5 \ pm$, then the ideal radius of $B^{-}$ would be .............. $pm$.

$A$ compound made of elements $A$ and $B$ forms an $fcc$ structure. Atoms of $A$ are at the corners and atoms of $B$ are present at the centres of the faces of the cube. What is the formula of the compound?

The number of nearest neighbours in a $BCC$ unit cell is

The coordination number of cation and anion in fluorite $CaF_2$ and anti-fluorite $Na_2O$ are respectively