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syllabus dot pnt help plz (2 Viewers)
- Thread starter kim_
- Start date
talk about the discoveries of recently discovered elements, remember recently IUPAC cut off some elements
hassium is made by bombarding Bi-208 (i think 208) with Fe-58 nuclei in a particle accelerator
http://en.wikipedia.org/wiki/Hassium
edit; cut off elements
http://www.iupac.org/reports/periodic_table/IUPAC_Periodic_Table-4Feb05.pdf
downloadable version of revised periodic table that will apply in the hsc
view it in html however from the iupac website here
hassium is made by bombarding Bi-208 (i think 208) with Fe-58 nuclei in a particle accelerator
http://en.wikipedia.org/wiki/Hassium
edit; cut off elements
http://www.iupac.org/reports/periodic_table/IUPAC_Periodic_Table-4Feb05.pdf
downloadable version of revised periodic table that will apply in the hsc
view it in html however from the iupac website here
hsc.csu.edu.au:
The nineteen transuranic elements with the atomic numbers above 95 (Z between 96 and 116, leaving out undiscovered 113 and 115) require high-energy particle accelerators to be produced. Use an Internet search engine and recent references to find out how particle accelerators are used to discover new transuranic elements. To process the sources you find, assess their reliability by comparing the information provided. Look for consistency of information.
The nineteen transuranic elements with the atomic numbers above 95 (Z between 96 and 116, leaving out undiscovered 113 and 115) require high-energy particle accelerators to be produced. Use an Internet search engine and recent references to find out how particle accelerators are used to discover new transuranic elements. To process the sources you find, assess their reliability by comparing the information provided. Look for consistency of information.
currysauce
Actuary in the making
well i am using neptunium and americium
the 1940-1950's are recent enough for me
the 1940-1950's are recent enough for me
Pace_T
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I've done element 110 and 111. Formerly known as ununnulium and ununnunium (spelling? LOL!)
I got all the information I needed from www.webelements.com (I think that's the link, or you can google it)
I got all the information I needed from www.webelements.com (I think that's the link, or you can google it)
as long as you describe when they were discovered, where and how, i think it doesn't matter which elements you choose. i would be cautious about 'recent' though. don't know how recent they want the elements to be... (could be within the last decade, or even last century... 
)
)
menty
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Unonoctium-238 was discovered in 1999 in UC Berkeky in a particle accelerator by the bombardment of Kr-86 and Pb-208.
i couldnt find anything on americium could u help???currysauce said:
i hav the use of it in the industry; used to measure density and thickness, smoke detectors
but i cant find any benefits or problems of its use (connected with its properties) help plz?
unless u used it as a radio isotope in medical industry
Last edited:
Forbidden.
Banned
If you chucked a smoke alarm in space it'll go off regardless.xiao1985 said:
There's an ionization chamber in a smoke alarm.
Incoming gas molecules in the air are ionized at a constant rate by the alpha emitter Americium-241, and since those ionized molecules now contain a charge they can conduct electricity within the electric field of the ionizing chamber.
If this rate of ionization falls, noted by less charge carriers within the electric field then an alarm will be trigggered.
And yes radiation has the potential to hurt
... even at low energies ...