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| 1. |
Au(I) is diamagnetic, while Au(III) has a magnetic moment of 2.95 BM. Predict the colour of aurous and auric ions? |
| Answer» Solution :`AU.(5d^(10))` ion is colourless due to the absence of UNPAIRED d - electron. `Au^(3+) (5d^8)` ion is coloured due to the PRESENCE of unpaired d- electrons and d-d TRANSITIONS. | |