Promethium - Periodic Table of Videos

Promethium is element number 61. Videos about all the elements at http://www.periodicvideos.com/

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Science & Technology

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• Promethium

[mmatheusc]

Prometheus did in Greek mythology

[onelasssttime]

LOL. Yes there will be a lecture at IKEA given by Martha Stewart.

[nowiecoche]

There was no technetium too!

[zbrooo]

@wikieditspam Unfourtunatley you can't stabilise a radioactive isotope or influence it's half life significantly as far as we know because the protons and neutrons in the atoms nucleus are held together by a physical force which can't be influenced. According to wikipedia the melting point of promethium is 1042 °C and it slwoly tarnishes in the air but it burns readily at 150 °C to form promethium oxide. The longest lived isotope of promethium has a half life of 17.7 years.

[psychedelicintrigue]

地球の楽曲 ♫

Serenade Homepage

[GDarkGoombaG]

@GDarkGoombaG the more nucleons you have, the more unstable it is, so it falls apart quicker. you could theoretically get a billion protons together with some amount of neutrons, but it would be REEAAAAAAALLLY short-lived. srry for abbreviations but i have to make messages fit comments. btw its roentgenium. copernicium is 112, and 118 is highest element known. uranium is highest natural element. and i dont remember electrical force's real name. btw check wikipedia for more.

[GDarkGoombaG]

@AutomatonGames k for this you have to understand nuclear strong force between nucleons (nucleons r protons and neutrons). theres gravity, electrical, strong and weak nuclear forces as four main forces. electrical force makes like charges repel. strong nuclear forces are what hold protons together. however, it decreases GREATLY with distance, and higher elements are so big that the force cant hold opposite sides together so the atom decays to a lower atom. the higher you go, CONT

[wikieditspam]

Are there any Stabilized isotopes of Promethium? What's it's melting point? Flammable?

[WeaselWJ]

@sockington1 What?

[TheSmashFiles]

@AutomatonGames cheers, glad to be of help

[AutomatonGames]

@TheSmashFiles Ok thanks! It all makes sence now!

[TheSmashFiles]

@AutomatonGames it isn't a combination of the properties of individual elements, it's a combination of the stuff in their nuclei; no matter what you'll have a specific number of protons. in concept you could combine three deuterium nuclei (one proton,one neutron) and get lithium, which would be identical to lithium formed from the combination of helium (two protons,two neutrons) and a single deuterium. the element is determined by the number of protons in its nucleus; nothing more, nothing less.