Energy level diagram for Ni2+. why the electrons are taken from s orbital but not d orbital?

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Chemistry

Guest

7 June, 13:33

Energy level diagram for Ni2+. why the electrons are taken from s orbital but not d orbital?

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Tequila · Answer 1

For transition metals, electrons often move from lower orbitals to higher orbitals to have have filled sub-shells.

This is also an explanation for a few of the oxidation states.

Having half filled or completely filled sub-shells make the metals more stable.

Carleigh Osborn · Answer 2

Because in this case the s-orbital you mean has a higher energy level (n=4) than the mentioned d-orbital (n=3). That means the s-orbital will loose the electrons first (the valence electrons are in n=4, so they will be the first to go way)