Technetium - Periodic Table of Videos

[LemonWoW131]

Did you realise that most or all of the chemicals on the periodic table of elements ends with an 'um' !!

[pug6666]

@LemonWoW131 Yea well helium is the te only noble gas with that ending and none of the halogens end with um.

[SuperibyP]

@LemonWoW131 oxygen, nitrogen, boron, carbon, iron, tin, lead, hydrogen, gold, silver, copper, zinc, phosphorous, sulphur, mercury and many others dont, so i wouldnt say most, but a great deal of them do.

[macro312]

I'm dual screening right now haha

[MrTechGuy1995]

That is my kind of element!

[KarbineKyle]

All elements have unstable radioisotopes, naturally or synthetically. Some elements, like Technetium (Tc) have no stable isotopes. Tc-99 = T½ of 211,100 years. It occurs naturally. Promethium (Pm) is the 2nd unstable element. Pm-147 = T½ of 2.6234 years. It occurs naturally. Tc is a transition metal, and Pm is a lanthanide. The only elements with more naturally occurring radioisotopes are Indium (In) and Rhenium (Re). In-115: (95.7%) T½ = 4.41×10^14 years. Re-187: (62.6%) T½ = 4.12×10^10 years.

[jasonguyperson]

can ununpentium (element 117) theoretically exist as a stable isotope??

[jasonguyperson]

@jasonguyperson CORRECTION - 115, element 115

[Prstvlkkrtek]

@jasonguyperson Little to nothing is known about elements 113 (ununtrium) and higher. It still seems unlikely. Lead (82) is the last stable element. Next is bismuth (83) with a half-life of about a billion times the age of the universe. This means that elements higher than lead are radioactive (with the exception of bismuth, thorium and uranium, which could be considered stable because they have extremely long half-lives).

[bigkahunaburger55555]

Cardiolite!

[bby444]

With all due respect, your first statement is incorrect--there are several lighter naturally occuring radioactive elements--e.g. potassium 40, vanadium 50, zinc 70, germanium 76, krypton 78, selenium 82, rubidium 87, zirconium 96. Admittedly, many of these occur as very small percentages of the natural element with very long half lives, but some, e.g. potassium 40, rubidium 87 are relatively abundant.

[gaswerti]

@bby444 so a radioactive isotope of potassium occurs naturally? that's really something i did not know. and if that really is true then what isotope is it?

[bby444]

@gaswerti Naturally occurring potassium consists of 3 isotopes: Potassium 39 makes up about 93%, Potassium 41 about 6.75% and Potassium 40 about 0.01%

K39 and K41 are stable and K40 is radioactive, with a half life of about 1 billion years.

[ROAtheist]

@gaswerti Same number of electrons and protons shared by all isotopes of a substance, different number of neutrons: 39, 40 or 41 in our case.

[karateinsomania]

i clicked on this video because he looks like einstien.

[Perilix]

@karateinsomania Not really. =p

[blizzardkb]

I can has Technezium?

[radiacto]

listen to technetium dubstep song AMAZING

[discaras]

Why technetium is radioactive:S?

[LedKenji666]

@discaras because it has naturaly too many neutrons in it wich makes it ''too heavy for itself'' so it decays. if im wrong someone must correct me

[douro20]

Not sure.

[douro20]

Technetium was first synthesized in 1937. It was named after the Greek word "teknetos" meaning artificial because at the time it was believed not to occur naturally. The first evidence of naturally occuring technetium was found in the spectrum of a red giant star in 1952. More recently it has found to be a product of spontaneous fission in uranium ores.

[pinochska]

you forgot to say - death by black hole by Neil Degrasse Tyson..

[Roddyoneeye]

This question may not be properly in the realm of chemistry; but "How do you safely purge the technetium from the subject ? And how much stays imbedded in the subjects organs, afterword ?"

[nseagoon71]

The Technetium they use in nuclear medicine has a really short half life, less than ten hours I believe. It does beta decay into Ruthenium.

[TheCaptainLulz]

TC97 is the most stable at about 2 million years. Id love it for my collection and its probably stable enough to last there too.

[Biggz1313]

@nseagoon71 The Tech in nuclear Medicine is Tc-99m (HL 6.015 hours) and it decays by beta with a 140keV gamma ray to Tc-99 which has a half life of 250,000 years.

[bionerd23]

my video may just give you an answer to that... see the 'video responses' to this video. :-)

[JBIS101MA]

it is apparently really rare on earth so it might be hard to get hold of it

[zeroxstrife250]

It's $60/gram

[liquidoxygen0]

2t22tornadosiren: I wish you Americans wouldn't force your way of life onto everybody else. Now get lost.

[tsunami2011]

now i feel bad being american...again why cant people just learn to CONVERT. it takes ten mintes if you dont know how to do it. i could find something online in 5 at the most

[legominifigure7]

anyone know where to buy it?

[culwin]

I bought some on Ebay but I think it was a scam because it wasn't radioactive at all.

[trytops007]

u seem to be think ... and "what ever" is usually spelled together ... "whatever"

[righteye]

lol i love the periodic table =)

[TheFragrance1992]

how much Technetium costs

[masterfufu1]

LOL, in the backround you can see that he syncronized his computer screen savers with eachother

[ISeverythingOK]

haahhh ur rite

[weebleFTW]

wrong, you can set it up so that your computer has two monitors (or more) and when you scroll off of one, it will appear on the other

[masterfufu1]

WOW, thats AMAZING. Thanks for clearing up any confusion....

[weebleFTW]

lmao

[PsykoPatrik]

A friend of mine had done this.

Two wide screen monitors for the same computer makes it much easier to edit picture and video when you can have the tools on one screen and the image on the other.

[NAMLegolas]

Its called DUAL SCREEN.

[88metallica88]

ture that... its really easy to do lol...

[manzilla86]

Yes! I work in Nuclear Medicine- Tc-99m is HUUUUGGGEEE in Nuclear Medicine. We create so much of it that even though it is an element with no stable isotopes, there is now more Tc some other rare elements which used to rank higher than it. Quite a bit is known about it now-adays. If anyone has questions about Nuclear Medicine, just send me a message. I love the subject, and it does wonders in diagnostic imaging of the human body, since it can image the physiology of the body as well as anatomy

[bodang1234]

Technetium 99 is the isotope used in medical imaging.

[rochelimit55555]

show some images please :3

[johnclavis]

It's true -- I have this old classroom wall periodic table from the 1950's, and the Technetium box is almost devoid of numbers and details -- even the atomic weight is a very approximate number!

Thanks so much for these videos!