Answer :
The radius of atom that just fit into octahedral site is 0.414 times the radius of Fe.
What is radius ratio rule?
The ratio of a cation's lower ionic radius to its greater ionic radius (anion) is known as the radius ratio.
What is the importance of this rule?
This rule aids in figuring out how ions are arranged in distinct crystal formations. It aids in determining an ionic crystal structure's stability.
According to limiting radius ratio,
[tex]\frac Rr[/tex] = 0.414
R = radius of atom
r = radius of Fe
Hence, radius of atom that just fit into octahedral site, R = 0.414*r
R= 0.414 times radius of Fe(r)
To know more about radius ratio rule, follow the link:
https://brainly.in/question/10565658
#SPJ4