AP EAMCET · Chemistry · Hydrogen
Hydration enthalpy of which of the following ions is highest?
- A \(\mathrm{Mg}^{2+}\)
- B \(\mathrm{Na}^{+}\)
- C \(\mathrm{Ca}^{2+}\)
- D \(\mathrm{K}^{+}\)
Answer & Solution
Correct Answer
(A) \(\mathrm{Mg}^{2+}\)
Step-by-step Solution
Detailed explanation
Hydration enthalpy is the amount of energy released when one mole of ions are dissolve in excess of water. Hydration enthalpy increases as the ionic size decreases and its charge increases. \(\mathrm{Na}^{+}\)and \(\mathrm{Mg}^{2+}\) belong to third period and therefore have…
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