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| 1. |
Both NO and NO_(2) have odd number of electrons. NO is colourless, but NO_(2) is coloured. Why? |
| Answer» SOLUTION :In `NO_(2)` molecule, colour is expained BASED on the presence of UNPAIRED electron, which can be EXCITED easily by the absorption of visible light. In NO molecule, the odd electron is also involved in bonding between two bonded atoms, the excitationof which can be possible only in ultraviolet region. Thus NO is colourless. | |