What are at least two shared characteristics of Calcium (Ca) and the matching element that you selected based on their locations in the Periodic Table?

Answer 1

One shared characteristic of Calcium (Ca) and Strontium (Sr) is their similar chemical reactivity. Both elements belong to Group 2 of the Periodic Table, also known as the alkaline earth metals, which are known for their high reactivity. Another shared characteristic is their atomic structure, as both Calcium and Strontium have similar electron configurations due to their placement in the same group of the Periodic Table.