Correct statement is

Options

A. `[Co(ox)_3]^(3–)` is more stable than `[Co(H_2O)_6]^(3+)`
B. In `[Co(NH_3)_6]^(2+) and [Cu(NH_3)_4]^(2+)` unpaired e– lies in valence d and p orbital respectively
C. Colour due to d-d transition is found to be more intense than charge transfer spectra
D. `delta` -bond is found to be between metals in polynuclear metal carbonyl compounds

Answer

A, B, D