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Which element has a high hydration enthalpy among Li and Be?

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The heat energy released when new bonds are made between the ions and water molecules is known as the hydration enthalpy of the ion. If the hydration enthalpy of an ion is high, it means that the hydrated ion is very stable. read more

Carbon has the highest first ionisation enthalpy among them. The order is C>B>Si>Al as Al and Si are in 3rd period and henceforth have one extra shell of electrons so it is easier to remove electrons from them. read more

Smaller the cation, greater is the degree of hydration.Alkali metals easily lose 1 electron therefore have high values of "oxidising potential" which means high tendency to get oxidised hence powerful reducing nature in aqueous medium. It is a fact that Li+ has greatest reducing nature in aqueous medium due to maximum hydration energy for Li+ ion. read more

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