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the claim
The 3d electron subshell begins filling at scandium due to energy level ordering
the verdict
SUPPORTED
the evidence backs this
confidence 80/100

The filling of the 3d electron subshell beginning around scandium is a standard chemical principle governed by the relative energy levels and ordering of atomic orbitals.

Evidence for · 2
Efficient algorithm for asymptotics-based configuration-interaction methods and electronic structure of transition metal atoms.
2010 · cited by 6
Paper [2] discusses the electronic structure and orbital filling of 3d transition metal atoms like scandium, consistent with standard energy level ordering.
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More for · 1
Hartree-Fock Multiplet Strengths for K I, Ca II, and Sc III.
1967 · cited by 1
Paper [6] examines Hartree-Fock wavefunctions and energy states including the 3d levels of Sc III and neighboring elements.
The paper trail · every fact has a biography
first checked01 Aug 2026
judged → SUPPORTED · 8001 Aug 2026
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