Sun February 03, 2013 By: Shivendra Upadhyay

although oxyjen is a paramagnetic substance, it is colourless. On the other hand potassium permangnate (KMnO4)is diamagnetic in nature,it is violet in colour. WHY?

Expert Reply
Wed February 06, 2013
In oxygen there ar"nt any d orbitals for electron transistions, where as Mn shows transistions 
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