Consider an ideal FCC crystal system, which is fully occupied by...

Consider an ideal FCC crystal system, which is fully occupied by the particles

\mathrm{A}, \mathrm{B}

and C , which are present at lattice points, octahedral voids and tetrahedral voids respectively. Identify the correct statement. Consider an ideal FCC crystal system, which is fully occupied by the particles A, B and C , which are present at

Consider an ideal FCC crystal system, which is fully occupied by the particles A, B and C , which are present at

Options

AParticle B is surrounded by 8 particles of C at a distance approximately equal $\frac{\mathrm{a} \sqrt{3}}{4}$
BFigure
represents one of the plane of symmetry
CFigure
represents one of the plane of symmetry
D $1^{\text {st }}$ nearest neighbour of particle $A$ is 8 particles of $C$ and $2^{\text {nd }}$ nearest neighbour is 6 particles of $B$

Correct answer

D. $1^{\text {st }}$ nearest neighbour of particle $A$ is 8 particles of $C$ and $2^{\text {nd }}$ nearest neighbour is 6 particles of $B$

Step-by-step solution

O . V . is surrounded by

8 \mathrm{~T} . \mathrm{V}

One particle of A is surrounded by

8 \mathrm{~T} . \mathrm{V}

. and also surrounded by 6 O.V.

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