05-04-10, 06:31 AM #1
As atomic numbers increase from 92 to 118, the trend for half life is to be shorter.
Theoretically, could a Transuranium element be made that is fairly stable?
Could, for example, element 256 have a half-life as long as Uranium?
Last edited by Captain Kremmen; 05-04-10 at 09:20 AM.
05-04-10, 07:33 AM #2
under the right conditions, then most probabaly yes.
but you'll find that these conditions do not exist naturally on earth.
05-04-10, 09:18 AM #3
This is open to extreme conditions if necessary.
But the ideal would be something that could remain stable under temperate conditions , and so long lived you could hold it in your hand without risk of excessive radiation.
05-04-10, 09:26 AM #4
Isotope half lifes. Note that the darker more stable isotope region departs from the line of protons (Z) = neutrons (N), as the element number Z becomes larger
Note. Might help. But probably not.
Last edited by Captain Kremmen; 05-04-10 at 10:04 AM.
05-04-10, 02:15 PM #5
There's a model that models nucleii as being shells of protons and neutrons.
This model predicts that there are 'magic numbers' of protons, neutrons, or (IIRC) total nucleii.
These numbers are magic because they're magically stable (I'm not being derisive or dismissive here), and they're stable because they present full or half full shells (and chemistry teaches us nature loves half full or full shells).
What has long been predicted, as a consequence of this model is that as they push to higher and higher z's with particle accelerators, they will come across a(nother) 'island of stability' that might have isotopes of elements with half lives measured in years rather than microseconds, and there is already some indications that this is happening.
05-05-10, 05:05 AM #6
Ununoctium, is a noble gas. Half life 0.89ms
Shouldn't that have been stable if the full shell theory is correct?
Its nearest element Ununseptium, has a half-life of 78 or 14ms, depending on the isotope.
05-05-10, 05:27 AM #7
Last edited by Trippy; 05-05-10 at 05:54 AM.
05-05-10, 07:00 AM #8
What group of the table would that be in?
At the rate they are going at creating new elements, we could see it within a few years.
Could the LHC help?
I realise it is not one of the current aims.
Bung Tungsten, 74 and Tellurium, 52 at each other. That's my recipe.
Last edited by Captain Kremmen; 05-05-10 at 07:11 AM.
05-05-10, 02:29 PM #9
05-05-10, 04:50 PM #10
05-05-10, 04:54 PM #11
A university laboratory has claimed to have found element 122 occurring naturally.
On April 24, 2008, a group led by Amnon Marinov at the Hebrew University of Jerusalem claimed to have found single atoms of unbibium in naturally occurring thorium deposits at an abundance of between 10−11 and 10−12, relative to thorium. The claim of Marinov et al. was criticized by a part of the scientific community, and Marinov says he has submitted the article to the journals Nature and Nature Physics but both turned it down without sending it for peer review..
06-09-11, 10:13 AM #12
Ununoctium has been rejected.
The current heaviest element is Ununhexium.
10-02-13, 11:42 AM #13
After expanding p/table, i realised every element as opposeing element as shown here
One of the things i found i found is that "element 126" is opposed by silver 47, which would then sugguest that gold79 and silver 47 would be the "recipe", and as we know gold in its "native form" is usually found with other metals such as silver,
Which i believe "once" exsisted as element 126 in earlier stage of "universe expansion".
10-02-13, 02:36 PM #14
10-14-13, 09:28 PM #15
By Paul W. Dixon in forum Astronomy, Exobiology, & CosmologyLast Post: 12-30-10, 11:07 AMReplies: 1953
By Thoreau in forum ChemistryLast Post: 05-04-10, 01:07 PMReplies: 18
By Anti-climactic in forum ChemistryLast Post: 09-14-09, 09:14 AMReplies: 2
By Xerxes in forum Physics & MathLast Post: 08-09-09, 01:46 AMReplies: 6
By Dinosaur in forum Physics & MathLast Post: 09-29-07, 07:55 PMReplies: 23