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Postby vivianndo_1L » Wed May 09, 2018 1:41 am

Which elements are predicted to have the following ground-state electron configurations:

(d) [Rn] 7s^2 6d^2

Why is the answer Th (thorium)? I know that the d orbital comes before f, but isn't thorium an actinoid (therefore belonging in the f-block)? I'm really confused, please help!

Adela Henry 1I
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Re: 2.45

Postby Adela Henry 1I » Wed May 09, 2018 8:22 am

I don't fully know why that is but if it is any help, on the list of problems to do it said to omit part d from 45. We probably won't have a question like that on the midterm.

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