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anonymous
 4 years ago
energy level diagram for Ni2+
why the electrons are taken from s orbital but not d orbital?
anonymous
 4 years ago
energy level diagram for Ni2+ why the electrons are taken from s orbital but not d orbital?

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anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0This is one of the exceptions to Aufbau's Principle, which unfortunately has no sound explanation. One idea is that the 4s electrons have less energy than the 3d electrons, but that is paradoxical because the 4s orbital comes before the 3d orbital.

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0Are there any other exceptions?

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0Yes, for transition metals, electrons often move from lower orbitals to higher orbitals to have have filled subshells. This is also an explanation for a few of the oxidation states. Having half filled or completely filled subshells make the metals more stable.

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0ok thank you so much!
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