Chemistry
Grade-9
Easy
Question
Alkali metals react with water vigorously to form hydroxides and dihydrogen. Which of the following alkali metals reacts with water least vigorously?
- Li
- Na
- K
- Cs
Hint:
Li size is very small.
The correct answer is: Li
- Alkali metals react with water vigorously to form hydroxides and dihydrogen.
- Na catches fire when kept is open air and is the most reactive alkali metal.
- Li reacts the least with water due to its small size and very high hydration energy.
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