What are the number of atoms per unit cell in $BCC$ and $FCC$ respectively?

$A$ cubic unit cell contains manganese ions at the corners and fluoride ions at the centres of each edge. The coordination number of the manganese ion is-

An example of fluorite structure is

Identify the type of unit cell that has particles at the centre of each face in addition to the particles at eight corners of a cube?

The number of atoms contained in one face-centred cubic $(FCC)$ unit cell of a monoatomic substance is:

The coordination number of an atom in a hexagonal close-packed $(hcp)$ structure is ...........