Problem: The ground electron configuration of a Tc atom is [Kr] 5s2 4d5. What is the electron configuration of a Tc3+ ion?

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We are asked to provide the electron configuration of a Tc3+ ion.


(+) charge → electrons removed


We simply need to remove the highest energy electrons from [Kr] 5s2 4d5

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The ground electron configuration of a Tc atom is [Kr] 5s2 4d5. What is the electron configuration of a Tc3+ ion?

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