All of the following share the same crystal structure except:

The number of octahedral sites per sphere in a $fcc$ structure is

In the face-centred cubic $(FCC)$ lattice structure of gold,the closest distance between gold atoms is ('a' being the edge length of the cubic unit cell).

How many nearest neighbours are there for $Si$ and $O$ atoms in quartz crystals?

What are the coordination numbers of $bcc$,$scc$,and $fcc$ respectively?

What is the coordination number of a cation present in a tetrahedral void?