In a $NaCl$ crystal, the distance between $Na^{+}$ and $Cl^{-}$ ions is $a \ pm$. What is the edge length of the unit cell?

In an ionic crystal with the general formula $AX$,if the coordination number is $6$,what will be the value of the radius ratio?

The correct coordination number for the zinc ion in the zinc blende crystal structure is:

Gold has a face-centred cubic $(fcc)$ lattice with an edge length of the unit cube of $407 \ pm$. Assuming the closest packing, the diameter of the gold atom is .............. $pm$.

What is the number of atoms present in the unit cells of a simple cubic,body-centered cubic,and face-centered cubic lattice of a monoatomic substance,respectively?

What is the minimum limiting radius ratio for an octahedral arrangement?