Which of the following alkaline earth metals is the most electropositive?

Select the elements belonging to the same group from the following list:

Which of the following elements has the highest tendency to form a peroxide?

In context with beryllium,which one of the following statements is incorrect?

State whether the following statements are True or False:
$(1)$ Plaster of Paris is used to join fractured bones and keep them immobilized.
$(2)$ Calcium carbonate and soil are the raw materials for cement production.

The order of thermal stability of carbonates of $IIA$ group is