Question

why do strontium and barium have similar properties as that of calcium?​

Answer 1

Answer:

The similar properties between calcium, strontium and potassium are : All of them have two electrons in the outermost shell. All are metals. Their oxides are alkaline

Strontium behaves much like calcium, so it is known as a 'bone-seeking' element," Buesseler said. "As such, it has a rather long biological half-life, i.e. the time retained in human and marine organisms is several years.

Strontium is a soft, silver-yellow, alkaline-earth metal. It has three allotropic crystalline forms and in its physical and chemical properties it is similar to calcium and barium. Strontium reacts vigorously with water and quickly tarnishes in air, so it must be stored out of contact with air and water.