The Student Room Group

Why are +2 and +3 the most common oxidation states of Iron

Please explain :smile:
Reply 1
+2 caused by the loss of the two 4d e-
+ caused by the loss of the two 4s e- and one of the 3d e- (leaving it with 3d5)
Original post by Pigster
+2 caused by the loss of the two 4d e-
+ caused by the loss of the two 4s e- and one of the 3d e- (leaving it with 3d5)


Slight typo there!
Reply 3
Pah, first thing in the morning. Also, the second line states + rather than +3.

2x 4s lost to form 2+ ion.
2x 4s and 1x 3d lost to form 3+ ion.

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