Electron Configuration & Crystal Field Visualizer
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Element
Charge
Crystal field
Octahedral (Oh)
Tetrahedral (Td)
Square planar (D4h)
Spin cases
High-spin
Low-spin
Display
Use noble-gas shorthand
Draw orbital boxes
Type a symbol (e.g., Fe) or atomic number (26). Positive charge removes electrons (cations); negative charge adds electrons (anions). Transition-metal cations remove ns before (n−1)d.
Fe³⁺
Cu²⁺
O²⁻
Cr
Pt²⁺
Electronic configuration
Atomic orbital diagram (Aufbau + Hund)
Crystal field splitting