Facts about the Classification of the Element Plutonium
Plutonium classified as an element in the Actinide series as one of the "Rare Earth Elements" which can located in Group 3 elements of the Periodic Table and in the 6th and 7th periods. The Rare Earth Elements are of the Lanthanide and Actinide series. Most of the elements in the Actinide series are synthetic or man-made.

Brief Facts about the Discovery and History of the Element Plutonium
Plutonium was discovered by Dr. Glenn T. Seaborg, Edwin M. McMillan, J. W. Kennedy, and A. C. Wahl in 1940 in the USA.

Occurrence of the element Plutonium
Manufactured synthetically
Found naturally in uranium ores

Common Uses of Plutonium
Radiological weapons
Poison
Electrical power generation

The Properties of the Element Plutonium
Name of Element : Plutonium
Symbol: Pu
Atomic Number: 94
Atomic Mass: (244.0) amu
Melting Point: 639.5 °C - 912.65 °K
Boiling Point: 3235.0 °C - 3508.15 °K
Number of Protons/Electrons: 94
Number of Neutrons: 150
Crystal Structure: Monoclinic
Density @ 293 K: 19.84 g/cm3
Color: Unknown