Question

Among the hydroxides of alkaline earth metals the least soluble in water

Answer 1

NaOH,KOH.
Maybe the right answer

Answer 2

Hey dear,

● Answer -
Barium hydroxide

● Explanation -
- Going down the series for hydroxides of alkaline earth metals, hydration enthalpy as well as lattice enthalpy decreases.
- But lattice enthalpy decreases relatively faster than hydration enthalpy.
- Therefore, solubility of hydroxides decreases for alkaline earth metals.
- As barium is last element in group II, its hydroxide is least soluble.


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