The periodic table was developed to classify elements according to their atomic numbers and their physical and chemical properties. You can predict the chemical properties of an element by its location in a column on this table.

Question

Which element has properties most similar to those of calcium (Ca)?

Answer 1

Calcium (Ca) is located in Group 2 of the periodic table, also known as the alkaline earth metals. Elements in the same group typically have similar chemical properties. The element that has properties most similar to those of calcium is strontium (Sr), which is directly below calcium in Group 2. Both elements exhibit similar reactivity and other physical and chemical properties due to their position in the same group.