The coordination number in $hcp$ is

In the rock salt structure,the $ccp$ arrangement of $Cl^{-}$ ions creates tetrahedral voids,which are....

$A$ and $B$ atoms in a crystal are positioned at the corners and face centers respectively. What is the formula of the crystal?

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

In a solid $AB$ having the $NaCl$ structure,$A$ atoms occupy the corners of the cubic unit cell. If all the face-centered atoms along one of the axes are removed,then the resultant stoichiometry of the solid is

$A$ compound formed by elements $X$ and $Y$ crystallises in a cubic structure, where $X$ atoms are at the corners of a cube and $Y$ atoms are at the body centre. The formula of the compound is: