Question

What is the least reactive element in Group 2?

Answer 1

1. The element of Group 2 is known as alkaline earth metal.
2. Beryllium$\left(\mathrm{Be}\right)$ is the least reactive element in group 2.
3. As we move down the group the reactivity of the element increases as the size increases.
4. The reactivity increase due to the reason that as we move down the group the size of an element increases due to which the attractions between nucleus and outer electrons become less and thus removal of electron becomes easy.
5. Beryllium is the only element in group 2 that do not react with water or steam and does not even react with Dinitrogen$\left({\mathrm{N}}_2\right)$.