Alkali metals react with water vigorously to form hydroxides and dihydrogen. Which of the following alkali metals reacts with water least vigorously?

Alkali metals react with water vigorously to form hydroxides and dihyd

1.	Alkali metals react with water vigorously to form hydroxides and dihydrogen. Which of the following alkali metals reacts with water least vigorously?
Answer» Li Na K CS Solution :Li has very high ENTHALPY of hydration, therefore the reaction between Li and water is HIGHLY exothermic but the energy evolved is consumed in fusion, vaporisation, and ionisation as a result reaction with water proceeds SLOWLY.