Sammysam3999 Sammysam3999

18-11-2016
Chemistry

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Which element has the following noble gas configuration:
[Rn]7s2 5f11
Can you please explain what you did!

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MrEnter MrEnter

18-11-2016

Einsteinium Would be your correct Answer.The electron Configuration [Ra] 7s2 5f8 is Not Valid because Ra is basically 7s2. However, you have Ra 7s2 5f8. You can never repeat an electron.

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