How to write the Orbital Diagram for Technetium?
Technetium (Tc) isn’t a champion of stability, but it’s not far off. Its outer shell holds electrons in both the 4d and 5s subshells ([Kr] 4d⁵ 5s²), leaving it partially filled. This incompleteness, unlike the stable full outer shells of noble gases, makes Technetium more prone to reactions.
