List of top Chemistry Questions on Unit Cells asked in AIIMS

Sodium crystallizes in bcc arrangement with the interfacial separation between the atoms at the edge $53\, pm$. The density of the solid is

The coordination number in $hcp$ is

If $ AgI $ crystallizes in zinc blende structure with $I^{-}$ ions at lattice points. What fraction of tetrahedral voids is occupied by $Ag^{+}$ ions?

The crystal system of a compound with unit cell dimensions $a = 0.387\, nm$, $b = 0.387\, nm$ and $c = 0.504 \,nm$ and $\alpha = \beta = 90^{\circ}$ and $\gamma$ = $120^{\circ}$ is

What is the co-ordination number of sodium in $Na_2O$ ?