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Calibrating instruments…
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Why complexes have colour — ligands, crystal field splitting and spin.
A metal ion wrapped in six ligands is a tiny machine for absorbing light. These CBSE Class 12 simulations let you build an octahedral complex in 3D — pick the metal ion, swap the ligands along the spectrochemical series, and watch the d-orbitals split by Δo, the electrons choose high-spin or low-spin, and the complex take on its real colour, computed from the very wavelength it absorbs. The magnetic moment follows from the unpaired electrons you can count on screen.
Beyond the open showcase, subscribed schools get the growing library of Coordination Compounds experiments — searchable, tagged by concept and difficulty, and expanding continuously.