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# KCl Crystallizes in the same type of lattice as does NaCl. Given that, $\large\frac{r_{Na^+}}{r_{cl^-}}$$=0.5 and \large\frac{r_{Na^+}}{r_{k^+}}$$=0.7$.Calculate: a) The ratio of the side of unit cell for KCl to that for NaCl and

1.143
Hence (A) is the correct answer.