What is the element whose 2+ cation's highest energy electron has the following set of quantum numbers, n=5, l=2, ml=1, and m.s=+1/2 for its highest energy electron?

Question

I know, based on the quantum numbers, that its referring to a 5d sublevel. Is it Ba?

How can I find the solution?

Thanks

Answer 1

I don't think the answer is Ba. I agree it is a 4d electron for l = 2

Answer 2

then what is it?

Answer 3

Apply the same reasoning to the Co question that we now know is the correct way to look at the problem.

Answer 4

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Answer 5

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