Questions tagged [transuranic-elements]

For questions pertaining to elements beyond Uranium in the periodic table.

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What is the correct electronic configuration of darmstadtium?

Some of the places, the electronic configuration of darmstadtium ($\ce{Ds}$) is given as $\mathrm{6d^9 7s^1}$ while at some other places, it is $\mathrm{6d^8 7s^2}$. Which among the two is correct?
3
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1answer
118 views

What are the consequences of having an element with an atomic number above 137?

In other words, is an element such as Feynmanium the last chemical element that can physically exist on a planet such as Earth?
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Is it theoretically possible that some STABLE isotopes from periods 8-10 exist on some distant planet somewhere in the universe?

By stable I mean a half-life of thousands of years at the very least. We may never have enough resources to synthesize stable isotopes from those periods, but is it theoretically possible that ...
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130 views

What happens if a proposed name for a new element cannot be abbreviated to a two-letter symbol?

Take the C-elements for example: C, Ca, Cd, Ce, Cf, Cl, Cm, Cn, Co, Cr, Cs, Cu. Imagine some newly synthesized element is to be named after the University of Colorado: Coloradium. Its symbol can't be ...
9
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1answer
146 views

Heaviest atom with which chemistry has been performed?

The nucleosynthesis of superheavy atoms such as transactinides is an exciting area of nuclear physics, but not much of a playground for chemistry because My question is: what is the heaviest atom ...
14
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1answer
894 views

Why was Lawrencium's symbol changed?

The initial proposal by Lawrence Berkeley National Laboratory scientists for naming element 103 was "Lawrencium" with the symbol "Lw", However, while IUPAC accepted the name "Lawrencium" for the ...