A crystal is made of particles A and B. A forms fcc packing and B occupies all the octahedral voids. If all the particles along the plane as shown in the figure are removed, then the formula of the crystal would be:

A crystal is made of particles A and B. A forms fcc packing and B occu

1.	A crystal is made of particles A and B. A forms fcc packing and B occupies all the octahedral voids. If all the particles along the plane as shown in the figure are removed, then the formula of the crystal would be:
A.	\[AB\]
B.	\[{{A}_{5}}{{B}_{7}}\]
C.	\[{{A}_{7}}{{B}_{5}}\]
D.	none of these
Answer» B. \[{{A}_{5}}{{B}_{7}}\]

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A crystal is made of particles A and B. A forms fcc packing and B occupies all the octahedral voids. If all the particles along the plane as shown in the figure are removed, then the formula of the crystal would be:

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