Question

what is radius ratio? Give its significance. ​

Answer 1

Explanation:

The ratio of the radius of cations (r+) to the radius of the anion (r–) is known as the radius ratio of the ionic solid. The significance of radius ratio: It is useful in predicting the structure of ionic solids. ... Greater the radius ratio, greater is the coordination number of cations and anions.

Answer 2

Answer:

The ratio of radius of cation (r+) to anion (r-) is called radius ratio.

Explanation:

If cations are extremely small and anions are extremely large, then the radius ratio is very small. It is significant in giving relationship between the radius, co-ordination number and the structural arrangement of molecules in an atom.

Ratio of radius = Cation radius/Anion radius