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 :DUE to high melting pointeven thought Li has high HEAT of hydration it is not sufficientto melt which exposes greatest surface to water for a reaction `THEREFORE`Li has least REACTIVITY