Plutonium element (Pu) is in period 7 of a periodic table. Plutonium is in the f-block and it is classified as an actinide on the periodic table.
There is a lot more information related to plutonium which is mentioned in the Information Table given below.
So let’s dive right into it!
Table of contents
- Plutonium element (Information Table)
- Plutonium element in Periodic table
- Facts about Plutonium
- Properties of Plutonium
- Uses of Plutonium
Plutonium Element (Information Table)
The important data related to plutonium element is given in the table below.
|Appearance of plutonium||Silvery white appearance|
|Atomic number of plutonium||94|
|Symbol of plutonium||Pu|
|Atomic mass of plutonium (most stable isotope)||244 u|
|Protons, Neutrons & Electrons in plutonium||Protons: 94, Neutrons: 150, Electrons: 94|
|State of plutonium (at STP)||Solid|
|Period number of plutonium in periodic table||7|
|Block of plutonium in periodic table||f-block|
|Category of plutonium||Inner transition metals|
|Bohr model or Electrons per shell or Electrons arrangement in plutonium||2, 8, 18, 32, 24, 8, 2|
|Electron configuration of plutonium||[Rn] 5f6 7s2|
|Orbital diagram of plutonium|
|Electronegativity of plutonium (on pauling scale)||1.28|
|Atomic radius of plutonium (van der Waals radius)||243 picometers|
|Density of plutonium||19.82 g/cm3|
|1st ionization energy of plutonium||6.06 eV|
|Main isotope of plutonium||238Pu, 239Pu and 240Pu|
|Melting point of plutonium||912 K or 639 °C or 1183 °F|
|Boiling point of plutonium||3505 K or 3228 °C or 5842 °F|
|Crystal structure of plutonium||Monoclinic|
|Discovery of plutonium||By Glenn T. Seaborg, Edwin McMillan, Joseph W. Kennedy and Arthur Wahl (between 1940-41)|
Also see: Interactive Periodic Table (It has rotating bohr models as well as many other details of all the 118 elements in a single periodic table).
Plutonium element in Periodic table
The Plutonium element (Pu) has the atomic number 94 and is located in period 7. Plutonium is a metal and it is classified as an actinide group element.
Facts about plutonium
Here are a few interesting facts about the plutonium element.
- Glenn T. Seaborg, Edwin McMillan, Joseph W. Kennedy and Arthur Wahl discovered plutonium between the years 1940-41.
- Plutonium was named after the dwarf planet “Pluto”.
- There are around 20 isotopes of plutonium and all these isotopes of plutonium are radioactive.
- 244Pu is the longest lived isotope of plutonium and it has a half-life of 80.8 million years.
- Plutonium is naturally available from uranium ores, but this naturally available uranium is very less in quantity. So plutonium is also artificially prepared from Uranium-238.
Properties of plutonium
Here is a list of some physical properties and chemical properties of plutonium.
Physical properties of plutonium
- Plutonium has a silvery-white appearance.
- Plutonium is not a good conductor of heat and electricity.
- Plutonium has a monoclinic crystal structure.
- Liquid plutonium is more dense as compared to solid plutonium.
- The melting point of plutonium is 912 K and its boiling point is 3505 K.
Chemical properties of plutonium
- Plutonium is a harmful and radioactive element.
- Plutonium can react with elements like carbon, nitrogen, silicon as well as halogens.
- Plutonium reacts with atmospheric oxygen and it tarnishes easily. Due to this reaction, it forms a yellow oxide layer.
- Plutonium has many oxidation states ranging from +2 to +8, but its most common oxidation states are +2, +3 and +4.
Uses of plutonium
Here are some uses of the plutonium element.
- The isotope of plutonium (239Pu) is used in nuclear weapons, because this isotope can undergo a chain reaction.
- 238Pu is used in radioisotope thermoelectric generators.