1.

The h.c.p. and c.c.p. structures for a given crystal system of equal - sized spheres are expected to have

Answer»

the same VOLUME, `1.33 pi r^(3)`
the same NUMBER of particles within the given UNIT cell
the same ratio, 0.74, of the total sphere volume to the unit - cell volume
All of the above

Answer :A::C


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