Question
Chemistry Question on GROUP 1 ELEMENTS
The solubilities of carbonates decrease down the magnesium group due to a decrease in :
A
lattice energies of solids
B
hydration energies of cations
C
inter-ionic attraction
D
entropy of solution formation
Answer
hydration energies of cations
Explanation
Solution
Solubilities of carbonates decreases down the group because lattice energy decrease is almost constant while decrease in hydration energy happens sharply. Finally difference of hydration energy and lattice energy decreases thus solubility decreases.