\( \mathrm{KCl} \) crystallizes in the same type of lattice as does \( \mathrm{NaCl} \). Given t...
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\( \mathrm{KCl} \) crystallizes in the same type of lattice as does \( \mathrm{NaCl} \). Given that \( r_{\mathrm{Na}^{2}}{ }^{+} / r_{\mathrm{G}^{-}}=0.55 \) and \( r_{\mathrm{Na}^{+}}{ }^{+} / r_{\mathrm{K}^{+}}=0.74 \), calculate the ratio of the side of the unit cell for \( \mathrm{KCl} \) to that for \( \mathrm{NaCl} \).
(A) \( 1.122 \)
(B) \( 1.224 \)
(C) \( 1.414 \)
(D) \( 0.732 \)
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