1.

If the radius of a Chloride ion is 0.154 nm, then what is the maximum size of a cation that can fit in each of its octahedral voids?(a) 1.15 x 10^-1 nm(b) 1.21 x 10^-1 nm(c) 1.18 x 10^-1 nm(d) 1.13 x 10^-1 nmI had been asked this question during an interview for a job.My doubt stems from Solid State in portion Solid State of Chemistry – Class 12

Answer»

The correct option is (d) 1.13 x 10^-1 nm

The explanation: GIVEN,

RADIUS of CHLORIDE ion (r^–) = 0.154 nm

 Let radius of cation = r^+

 For Octahedral Voids, r^+ / r^– = 0.732 (for MAXIMUM value of the size of the cation)

Therefore, r^+ = 0.732 x 0.154 = 1.13 x 10^-1 nm.



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