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Your Questions About How To Discover New Elements

Sharon asks…

How many elements did Glenn Seaborg Discover?

My chemistry teacher told my class that Glenn Seaborg discovered 8 new elements, but some website say that he discovered 10 new elements. So I’m not sure which is correct.
I should trust me teacher, but she told my class that there are 117 elements that have been discovered even though there are 118.

New Niche Finder answers:

Glenn Seaborg was a prof at Cal Berkeley where I got my degree

the world’s first cylotron is at the Lawerence Hall of Science on the Hill above campus.

His team – which he lead discovered 10 elements in Berkeley, California.

Lisa asks…

What are some uncommon elements in the period table?

I know since I’ve graduated high school, chemists have found new elements and added them to the periodic table, what are they? I’ve heard of fluvonium or something like that and a few others that I can’t pronounce. What are some of them and what weird or strange reactions happen when they combine with other matter or forces?

New Niche Finder answers:

Take a look at this:

http://www.webelements.com/

“chemists have found new elements and added them to the periodic table, what are they?”

Depends on when you graduated from high school. For the most part, what has been happening is that discoveries made years ago are now being reviewed and approved by the IUPAC. Once the approval process is complete, the element is named with a permanent name, such as Flerovium, element #114.

At the above link, clicking on the element symbol will take you to an informational page about the element. From there, have a very nice time researching the new elements. (In my era it was 101 and 102 being discovered. We’ve come a long ways since!)

Thomas asks…

Who discovered the element mercury? and in what year?

Who discovered the element mercury? and in what year?

I need a source too.

New Niche Finder answers:

Http://education.jlab.org/qa/discover_ele.html

its been known since ancient times. Ive heard from some people that it was discovered by the greeks but the date is unknown

William asks…

Elements whose atomic numbers are greater than 92 are sometimes referred to as the transuranium elements. Why?

Elements whose atomic numbers are greater than 92 are sometimes referred to as the transuranium elements. Why?

thank you

New Niche Finder answers:

Of the elements with atomic numbers 1 to 92, all but four (technetium, promethium, astatine, and francium) occur in easily detectable quantities on earth, having stable, or very long half life isotopes, or are created as common products of the decay of uranium.

All of the elements with higher atomic numbers, however, have been first discovered artificially, and other than plutonium and neptunium, none occur naturally on earth. They are all radioactive, with a half-life much shorter than the age of the Earth, so any atoms of these elements, if they ever were present at the earth’s formation, have long since decayed.

Long answer short… Any element over 92 is a man-made element.

Richard asks…

What elements are created by a supernova that are heavier than iron?

I need to pick 5 elements that a supernova creates that are heavier than iron

New Niche Finder answers:

Iron is atomic number 26, and those thatsay all of them up to 92 Uranium) are technically correct.
So there is a lot to chose from.

Some are much rarer than others, but Silver (Ag at stomic number no 47) and Gold (Au at 79) are obviously popular, Platinum (Pt at 78) is valuable of course, but Iridium, normally only found in very small quantities on Earth except for in the KT layer that is the main evidence for the theory of the donosaur killing meteorite, is more common in space (Ir at no 77)

I would go for Thallium, highly poisonous, use to kill rats, and the odd person down the years since it was discovered in 1861 (Tl at no 81), four of the rare Earth metals were discovered in a mine at one small village in Sweden, Ytterby, and the elements Erbium (Er at no 68) , Terbium (Tb at no 65) , Yttrium (Y at no 39) and Ytterbium (Yb at no 70) are all named after that village, all have interesting uses in electronics and lighting, including laser production.

One small note and a word or two or warning, beware of chemists and astral bodies trying to sell you Fracium, Astatine and Technetium, these three elements are the rarest in the universe, Francium is so chemically reactive that it exists no where for more than a few minutes at most, astatine is so radioactive that as soon as it is produced it decays, and Technetium is so rare on Earth that it is only produced artificially, it has been detected in the aftermath of supernovae in very small amounts, using any of these three will probably get you into unnecessary arguments.

Just a few suggestions, otherwise, look up the periodic table, there are more than enough to chose from.

Edit:

Reading a few of the other answers, and @ Morningfox, none of the elements passed 92 Uranium would occur anywhere naturally in nature, all have to be produced by industrial or technological process, so they would not be found out amongst the stars. I would also suggest that your answer is a shortened version of others, and that tacking a wikipedia reference to it does not make you answer more legitimate, plagiarising others answers can be easily described as cheating.

I will also note that someone here has claimed technetium to be an artificial element, perhaps they should do some research, maybe start with the wikipedia page.

Http://en.wikipedia.org/wiki/Technetium

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