In the closest packed structure of a metallic lattice,the number of nearest neighbours of a metallic atom is

The $FCC$ crystal contains how many atoms in each unit cell?

In the $NaCl$ crystal structure,how many chloride ions surround each sodium ion?

Which set of following characteristics for $ZnS$ crystal is correct?

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).

If an atom is present in the centre of the cube,the participation of that atom per unit cell is