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A d-block element forms octahedral complex but its spin magnetic moment remains same either in strong field or in weak field ligand. Which of the following is/are correct ?
A. Element always forms coloureless compound
B. Number of electrons in `t_(2g)` orbitals are higher than in `e_(g)` orbitals
C. It can have either `d^(3)` or `d^(8)` comfiguration
D. It can have either `d^(7)` or `d^(8)` configuration

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Correct Answer - BC
Irrespective of nature of ligand field, magnetic moment of octahedral complexes having metal ions is `d^(1),d^(2),d^(3),d^(8),d^(9)` configuration, remains same.
Element may or may not form colourlss complex.

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