Shivaji’s Guru was Shree Samarth Ramdas was a noted 17th-century saint and spiritual poet of Maharashtra. He is most remembered for his Advaita Vedantist text, the Dasbodh. Ramdas was a devotee of Hanuman and Rama.
We know that, elements in the same group of the periodic table have similar characteristics. Here magnesium and strontium are the same 2nd group elements and have same behavior.