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CsBr has cubic structure with edge length \( 4.3 \stackrel{\circ}{\AA} \). The
\( \mathrm{P} \)
W shortest inter ionic distance in between \( \mathrm{Cs}^{+} \)and \( \mathrm{Br}^{-} \)is
(A) \( 3.72 \stackrel{\circ}{\mathrm{A}} \)
(B) \( 1.86 \stackrel{\circ}{\mathrm{A}} \)
(C) \( 7.44 \stackrel{\circ}{\AA} \)
(D) \( 4.3 \stackrel{\circ}{\AA} \)
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