# Why do large cations stabilise large anions and small cations stabilise small anions? [closed]

I see this trend from enthalpy change of decomposition data, though I struggle to find a decent explanation for why.

• Are you asking this with regards to the dissolution of inorganic salts? – Tan Yong Boon Dec 2 '18 at 13:23
• – Mithoron Dec 2 '18 at 20:26

This ratio is $${R_{C}/R_{A}}$$ (C = cation, A=anion).