The Element Plutonium

The common slogan used for plutonium is a ‘physicist’s dream and an engineer’s nightmare’. Thus it is known as the most complex of all elements. To put forward a simple description of this most complex element, it is a rare, radioactive, metallic and toxic chemical element. By far Plutonium’s greatest importance lies in its isotope Plutonium-239, which has a half-life of more than 20000 years.  

Its most popular uses include usage in nuclear weapons, as a source of nuclear power and as a successful power source for artificial heart pacemakers which reduced the risks of repeated surgery.

 


Atomic Number & Chemical Properties


Element Basics:

Chemical Symbol: Pu
Atomic Number: 94
Atomic Weight: 244.0642
Element Classification: Radioactive Rare Earth Element (Actinide Series)
Discovered By: G.T.Seaborg, J.W.Kennedy, E.M.McMillan, A.C.Wohl
Date of Discovery: 1940 (United States)
Origin of Name: Named for the planet Pluto.

How to Recognize it at a Party:

Silvery-white, radioactive metal

Seriously Atomic Information:

Density (g/cc): 19.84
Melting Point (°K): 914
Boiling Point (°K): 3505
Atomic Radius (pm): 151
Atomic Volume (cc/mol): n/a
Covalent Radius (pm): n/a
Ionic Radius: 93 (+4e) 108 (+3e)
Pauling Negativity Number: 1.28
First Ionizing Energy (kJ/mol): 491.9
Oxidation States: 6, 5, 4, 3
Electronic Configuration: [Rn] 5f6 7s2

Getting Intimate with Plutonium:

Lattice Structure: Monoclinic (MCL)
Lattice Constant (Å): n/a
Lattice C/A Ratio: n/a
Specific Heat (@20°C J/g mol): n/a
Fusion Heat (kJ/mol): 2.8
Evaporation Heat (kJ/mol): 343.5
Thermal Conductivity (@25°C W/m K):
Debye Temperature (°K): n/a


Society's Questions About Plutonium:

Have you ever wondered what everyone else in the world thinks about Plutonium? Is anyone else looking for it too? If so, why? What do they want?

The following list shows the most common online questions about the element Plutonium. Are your questions the same or different from everyone else's?

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