Posted by natash on Saturday, November 1, 2008 at 8:01pm.
Ground state of 26Fe.
1s2 2s2 2p6 3s2 3p6 3d6 4s2
So to make the 3+ ion, we remove the 2 outside electrons (the 4s2 electrons) + 1 more from the 3d orbital. Therefore, the ground state for the 3+ ion is
1s2 2s2 2p6 3s2 3p6 3d5
Hund's rule of maximum multiplicity says that these electrons will go into unfilled shells for the ground state. So how many d orbitals are available? There are 5 d orbitals and we place 5 electrons in them; therefore, there must be 5 unpaired electrons.
how can you fill a flask with pure oxygen without mixing it with air
how can you fill a flask with pure oxygen without mixingit with air
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