Final answer:
Strontium (Sr) is a shiny, silvery-white, and reactive metal that is located below calcium (Ca) in Group 2 of the periodic table.
Step-by-step explanation:
From the information provided, we can predict the properties of strontium (Sr), which is located below calcium (Ca) in Group 2 of the periodic table. Strontium is a shiny, silvery-white, and reactive metal, similar to other alkaline earth metals such as beryllium, magnesium, and barium. However, strontium is less abundant and rarer compared to calcium and magnesium.