JEE Main2003Chemistrys Block ElementsActual
The solubilities of carbonates decrease down the magnesium group due to a decrease in
Options
- Ahydration energies of cations
- Binter-ionic attraction
- Centropy of solution formation
- Dlattice energies of solids
Correct answer
A. hydration energies of cations
Step-by-step solution
The solubility is governed by H _ solution i.e. H _ solution = H _ lattice - H _ Hydration . Due to increase in size the magnitude of hydration energy decresaes and hence the solubility.