The answer is a non-negative integer. A atoms construct fcc type structure in which B atoms occu...

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The answer is a non-negative integer.
A atoms construct fcc type structure in which B atoms occupy all the octahedral voids. If all the atoms are removed from one of the face of unit cell, then the new empirical formula is \( \mathrm{A}_{x} \mathrm{~B}_{y} \). The value of \( (x+y) \) is
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