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 coordination number in a calcium fluoride $(CaF_2)$ type structure?

If the distance between $Na^{+}$ and $Cl^{-}$ ions in $NaCl$ crystal is $a \, pm$, what is the length of the cell edge?

In a face-centered cubic $(FCC)$ lattice,$A$ atoms are present at the corners and $B$ atoms are present at the face centers. If one $B$ atom is removed from one of the face centers,what will be the molecular formula of the compound?

In $NaCl$ the centres of two nearest like charged ions are present at a distance of

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