Hi vinita,

radius ratio is the ratio of (radius of cation)/(radius of anion). For more information you can go for below link.

Radius ratio formula (https://en.wikipedia.org/wiki/Cation-anion_radius_ratio)

https://engineering.careers360.com/jee-main-college-predictor?icn=QnA&ici=qna_answer

Hi aspirant,

Seemingly you are asking about radius ratio. But that is not clear. Yoi have not completed your question. On account of its inadequate information it is not possible for me to answer it properly and exactly. Nevertheless, here I am providing you with the definition of ratio in mathematics and accordingly you can get your answer.

In mathematics, a ratio indicates how many times one number contains another.

And from Chemistry point of view, Radius ratio is the ratio of the ionic radius of the cation to the ionic radius of the anion in a cation-anion compound.

Hope I answered your query.

Hi Vinita,

Radius ratio is the ratio of cation to the ratio of an anion. Here, Ratio of cation= r, Ratio of anion = R. Thus, Radius ratio = (r/R).

In simpler words, Radius Ratio refers to as the ration of smaller ionic radius (cation) by the ratio of larger ionic radius (anion).

Feel free to ask doubts in the Comment Section.

I hope this information helps you.

Good Luck!

Hello Aspirant

radius ratio is the ratio of cation to the ratio of an anion. Here, Ratio of cation= r, Ratio of anion = R. Thus, Radius ratio = (r/R). Limiting radius ratio helps in expressing the range of radius ratio.

Hope it helps

Thank you & Good Luck!!!