Facts about the
Definition of the Element Protactinium
The Element Protactinium is defined as...
A short-lived radioactive metallic element formed from uranium and
disintegrating into actinium and then into lead.
Interesting Facts
about the Origin and Meaning of the element name Protactinium
What are the origins of the word Protactinium ?
The name originates from the Greek word 'protos' meaning first
Facts about the
Classification of the Element Protactinium
Protactinium 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 Protactinium
Protactinium was discovered by Fredrich Soddy in 1917
Occurrence of the
element Protactinium in
the Atmosphere
Obtained from fission product of plutonium, uranium & thorium
Common Uses of
Protactinium
Basic scientific research
The Properties of the Element
Protactinium
Name of Element : Protactinium Symbol: Pa
Atomic Number: 91
Atomic Mass: 231.03587 amu
Melting Point: 1600.0 °C - 1873.15 °K
Boiling Point: Unknown
Number of Protons/Electrons: 91
Number of Neutrons: 140
Crystal Structure: Orthorhombic
Density @ 293 K: 15.4 g/cm3
Color: silver
The element Protactinium and the Periodic Table
Find out more facts about Protactinium on the Periodic Table which
arranges every chemical element according to its atomic number, as
based on the periodic law, so that chemical elements with similar
properties are in the same column. Our Periodic Table is simple to
use - just click on the symbol for Protactinium for additional facts and
info and for an instant comparison of the Atomic Weight, Melting
Point, Boiling Point and Mass - G/cc of Protactinium with any other
element. An invaluable source for more interesting facts and
information about the Protactinium element and as a Chemistry reference
guide.
Facts and Info about
the element Argon - IUPAC and the Modern Standardised Periodic Table
The Standardised Periodic Table in use today was agreed by the
International Union of Pure Applied Chemistry, IUPAC, in 1985
which includes the Protactinium element. The famous Russian Scientist,
Dimitri Mendeleev, perceived the correct classification method of
"the periodic table" for the 65 elements which were known in his
time. Protactinium was discovered by Fredrich Soddy in 1917. The Standardised Periodic Table now recognises more periods
and elements than Dimitri Mendeleev knew in his day but still all
fitting into his concept of the "Periodic Table" in which
Protactinium is
just one element that can be found.
