Element Plutonium

Plutonium ElementIt is an actinide metal of silvery-gray appearance that tarnishes when exposed to air, and forms a dull coating when oxidized
Plutonium is a radioactive chemical element with the symbol Pu and atomic number 94.
The element normally exhibits six allotropes and four oxidation states. It reacts with carbon, halogens, nitrogen, silicon, and hydrogen
Plutonium, like most metals, has a bright silvery appearance at first, much like nickel, but it oxidizes very quickly to a dull gray, although yellow and olive green are also reported

Names and Identifiers

Chemical Formula:Pu
CAS:7440-07-5
Molecular Weight:244.06000 g/mol
EC Number :n/a
MDL Number:n/a
Color:silvery white
Other Names:Plutonio
PubChem CID:23940
IUPAC Name:Plutonium
Inchl:InChI=1S/Pu
InChI Key:OYEHPCDNVJXUIW-UHFFFAOYSA-N
Canonical SMILES:[Pu]
ICSC Number:n/a

Physical & Chemical Properties

Phase:Solid
Density:19.816 g/cm³
Boiling Point:3505 K ​(3228 °C, ​5842 °F)
Melting Point:912.5 K ​(639.4 °C, ​1182.9 °F)
Molecular Formula:Pu
Flash Point:n/a
Exact Mass:244.06400

Twenty radioactive isotopes of plutonium have been characterized. The longest-lived are plutonium-244, with a half-life of 80.8 million years, plutonium-242, with a half-life of 373,300 years, and plutonium-239, with a half-life of 24,110 years.

Radiosotope data

IsotopeMass/DaHalf-lifeMode of decayNuclear spinNuclear magnetic moment
236Pu236.046052.87 yα to 232U; SF0
237Pu237.0484045.7 dEC to 237Np; α to 232U7/2
238Pu238.0495587.74 yα to 234U; SF0
239Pu239.0521624110 yα to 235U; SF1/20.203
240Pu240.053816537 yα to 236U; SF0
241Pu241.0568414.4 yα to 237U; SF; β to 241Am5/2-0.683
242Pu242.058743.76 x 105 yα to 238U; SF0
243Pu243.062004.956 hβ to 243Am7/2
244Pu244.064199 (5)8.2 x 107 yα to 240U; SF0
245Pu245.0677410.5 hβ to 245Am9/2
246Pu246.0702010.85 dβ to 246Am0

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