The coordination number of a metal crystallizing in a hexagonal close-packed $(hcp)$ structure is:

If $Z$ is the number of atoms in the unit cell that represents the closest packing sequence $ABCABC$,the number of tetrahedral voids in the unit cell is equal to

For which ionic compound is the radius ratio $0.93$?

The edge length of the unit cell of $NaCl$ crystal lattice is $552 \, pm$. If the ionic radius of the sodium ion is $95 \, pm$, what is the ionic radius of the chloride ion in $pm$?

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

Which of the following metals has a $ccp$ crystal structure?