Facts about the
Definition of the Element Lanthanum
The Element Lanthanum is defined as...
A soft, silvery-white, malleable, ductile, metallic rare-earth
element, obtained chiefly from monazite and bastnaesite and used
in glass manufacture and with other rare earths in carbon lights
for movie and television studio lighting.
Interesting Facts
about the Origin and Meaning of the element name Lanthanum
What are the origins of the word Lanthanum ?
The name originates from the Greek word lanthanein meaning 'to lie
hidden'.
Facts about the
Classification of the Element Lanthanum
Lanthanum classified as an element in the Lanthanide 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 divided into the Lanthanide and Actinide
series. The elements in the Lanthanide series closely resemble
lanthanum, and one another, in their chemical and physical
properties. Their compounds are used as catalysts in the
production of petroleum and synthetic products.
Brief Facts about the
Discovery and History of the Element Lanthanum
Lanthanum was discovered by Carl G. Mosander in 1839
Occurrence of the
element Lanthanum in
the Atmosphere
Obtained chiefly from monazite and bastnaesite
Common Uses of
Lanthanum
Glass manufacture
Carbon lights for movie and television studio lighting
Camera lenses
The Properties of the Element Lanthanum
Name of Element : Lanthanum
Symbol of Element : La
Atomic Number of Lanthanum : 57
Atomic Mass: 138.9055 amu
Melting Point: 920.0 °C - 1193.15 °K
Boiling Point: 3469.0 °C - 3742.15 °K
Number of Protons/Electrons in Lanthanum : 57
Number of Neutrons in Lanthanum : 82
Crystal Structure: Hexagonal
Density @ 293 K: 6.7 g/cm3
Color of Lanthanum : silvery-white
The element Lanthanum and the Periodic Table
Find out more facts about Lanthanum 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 Lanthanum for additional facts and
info and for an instant comparison of the Atomic Weight, Melting
Point, Boiling Point and Mass - G/cc of Lanthanum with any other
element. An invaluable source for more interesting facts and
information about the Lanthanum 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 Lanthanum 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. Lanthanum was discovered by Carl G. Mosander in 1839. 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
Lanthanum is
just one element that can be found.
