* Electronic Configuration: Strontium has an atomic number of 38, meaning it has 38 electrons. Its electronic configuration is [Kr]5s².

* Valence Electrons: The outermost shell (5s) has two electrons. These electrons are paired in the 5s orbital.

* Unpaired Electrons: Since all electrons are paired, there are no unpaired electrons in strontium.

Strontium is an alkaline earth metal, and like other elements in this group, it readily loses its two valence electrons to achieve a stable, noble gas configuration.