Plutonium

94
Pu
Gruppe
n/a
Periode
7
Blok
f
Protons
Electrons
Neutrons
94
94
150
General Properties
Atomnummer
94
Atommasse
[244]
Mass Number
244
Kategori
Actinider
Farve
Silver
Radioactive
Ja
Named after the planet Pluto
Krystalstruktur
Simpel Monoklin
History
Plutonium was first produced in 1940 by Glenn T. Seaborg, Edwin M. McMillan, Joseph W. Kennedy and Arthur Wahl.

Plutonium-238 was produced by deuteron bombardment of uranium-238 in the 60-inch cyclotron at the University of California, Berkeley.

The Berkeley team made neptunium-238 which decayed to plutonium-238.
Elektroner i hver skal
2, 8, 18, 32, 24, 8, 2
Elektronkonfiguration
[Rn] 5f6 7s2
Pu
The atomic bomb dropped on Nagasaki, Japan in 1945 had a plutonium core
Physical Properties
Tilstandsform
Fast stof
Massefylde
19,816 g/cm3
Smeltepunkt
912,55 K | 639,4 °C | 1182,92 °F
Kogepunkt
3501,15 K | 3228 °C | 5842,4 °F
Smeltevarme
n/a
Fordampningsvarme
325 kJ/mol
Varmefylde
-
Abundance in Earth's crust
n/a
Abundance in Universe
n/a
A
Billede akkrediteringer: Wikimedia Commons (Los Alamos National Laboratory)
A ring of weapons-grade 99.96% pure electrorefined plutonium, enough for one bomb core
CAS Number
7440-07-5
PubChem CID Number
23940
Atomic Properties
Atomradius
159 pm
Kovalent radius
187 pm
Elektronegativitet
1,28 (Paulings skala)
Ionization Potential
6,0262 eV
Atomic Volume
12,32 cm3/mol
Varmeledningsevne
0,0674 W/cm·K
Oxidationstrin
3, 4, 5, 6, 7, 8
Applications
The isotope plutonium-239 is a key fissile component in nuclear weapons, due to its ease of fission and availability.

Plutonium-238 has also been used successfully to power artificial heart pacemakers, to reduce the risk of repeated surgery.

Plutonium-238 mixed with beryllium is used to generate neutrons for research purposes.
Plutonium is harmful due to its radioactivity
Isotoper
Stable Isotopes
-
Unstable Isotopes
228Pu, 229Pu, 230Pu, 231Pu, 232Pu, 233Pu, 234Pu, 235Pu, 236Pu, 237Pu, 238Pu, 239Pu, 240Pu, 241Pu, 242Pu, 243Pu, 244Pu, 245Pu, 246Pu, 247Pu