Answer:
(i) octahedral.
This electron goes in to empty e, level, hence colour changes from viole
to yellow-green at
lower temperature: Violet at higher temperature : Yellow-green[1]
(ii)
This electron due to (CFSE) remains in and due
to unpaired electron in d-orbital there is d-d* transition and complex
is coloured (violet). [1]
(iii)
Triamminetriaquochromium (III) chloride [1]
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