In a face centered cubic arrangement of \( A \) and \( B \) atoms whose \( A \) atoms are at the...

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In a face centered cubic arrangement of \( A \) and \( B \) atoms whose \( A \) atoms are at the corner of the unit cell and \( B \) atoms at the face centers. One of the \( B \) atoms missing from one of the face in unit cell. The simplest formula of compound is:
(a) \( A B_{3} \)
(b) \( A_{8} B_{5} \)
(c) \( A_{2} B_{5} \)
(d) \( A B_{2 / 5} \)
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