In a primitive unit cell the particles occupies

Q. Match the following:

Unit cell	Definition
(a) Primitive	(i) Contains one constituent at its body-centre other than corners
(b) End-centred	(ii) constituents only at the corners
(c) Face-centred	(iii) constituents at the centre of any two opposite faces other than corners
(d) Body- centred	(iv) constitutents at the centre of each face other than corners
	(v) constitutents only at the centre of cell

Q. In a unit cell, atoms A, B, C and D are present at half of total corners, all face-centres, body-centre and one third of all edge-centres respectively. Then formula of unit cell is ?

Q. In a unit cell, atoms $A,B,C$ and $D$ are present at corners, face-centres, body-centre and edge-centres respectively. If atoms touching one of the plane passing through two diagonally opposite edges are removed, then formula of compound is:

Q. For a NaCl unit cell, the $N{a}^{+}$ occupies the edge centres and body centred positions of cube while $C{l}^{-}$ occupies the corners and face centres of the cube.

Which is the correct expression for determining packing fraction (P.F.) of NaCl unit cell, if ions along an edge diagonal are absent?

Q. Which of the following unit cells has constituent particles occupying the corner positions only?