How to write the Orbital Diagram for Scandium?
Scandium (Sc) has 21 electrons buzzing around its core. Unlike some heavier elements, these electrons fill only the first four shells (1s, 2s, 2p, 3s). The inner shells are completely filled, while the outermost 3s subshell holds just 2 electrons. This arrangement lays the foundation for scandium’s chemical behavior.