Explanation
Li2CO3 is not so stable towards heat, being small in size, it is decompose into Li2O and CO2.
The hydration enthalpy of Be2+ and Mg2+ ions is more than the lattice enthalpy and so they are soluble in water.
Because of the small size of Li and F, LiF has highest lattice enthalpy and hence most stable.
3 [K, Rb, Cs]
5 [Li, Mg, Ca, Sr, Ba]
Please disable the adBlock and continue. Thank you.