How to Write the Orbital Diagram for Curium?
Curium (Cm) shares Berkelium’s reactive side. Its outer shell lacks a full configuration, with electrons in the 5f, 6d, and 7s subshells. This incompleteness, written as [Rn] 5f⁷ 6d¹ 7s², makes Curium chemically active, unlike the stable noble gases.
