osaka Posted April 12, 2004 Posted April 12, 2004 I know the oxidation number of non-metallic elements. But How do I know the oxidation number of transition elements. Such as Fe and Cr Cr = 4s1 3d5 when Cr change to Cr2+ Cr3+ Is it stable?
Crash Posted April 12, 2004 Posted April 12, 2004 The oxidation number is 2 for Cr 2+ and 3 for Cr 3+, thats one of the distinctive features of transition elements, variable oxidation states
Crash Posted April 12, 2004 Posted April 12, 2004 No worrys, you need to memorise the main ones for school others aren't really required untill uni ,Mn,Cu,Fe,Cr and dichromate, permaganate etc..
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