Chemistry - Solid State Question with Solution | TestHub

Correct answer is in between $0.414$ and $0.732$ Since the general formula is $\mathrm{AX}$ with coordination number 6 , the crystal could be considered as $\mathrm{NaCl}$. Thus, it is evident that the ratio lies between $0.414$ and $0.732$ because of its octahedral structure. The value ranging between $0.414$ and $0.732$ is obtained by dividing the radius of positive ion by that of negative ion.