Facts about the
Definition of the Element Roentgenium
The Element Roentgenium is defined as...
Definition of the Rubidium Element
A soft silvery-white metallic element of the alkali group that
ignites spontaneously in air and reacts violently with water, used
in photocells and in the manufacture of vacuum tubes.
Interesting Facts
about the Origin and Meaning of the element name Roentgenium
What are the origins of the word Roentgenium ?
Originates from the Latin word 'rubidus' meaning red.
Facts about the
Classification of the Element Roentgenium
Rubidium is classified as an "Alkali Metal" and located in Group 1
elements of the Periodic Table. An Element classified as an Alkali
Metal is a very reactive metal that does not occur freely in
nature. Alkali metals are soft, malleable, ductile, and are good
conductors of heat and electricity.
Brief Facts about the
Discovery and History of the Element Roentgenium
Rubidium was discovered by Robert Bunsen and Gustav Kirchhoff in
1861 in the mineral lepidolite through the use of a spectroscope.
It has the highest room temperature conductivity of any known
ionic crystal. Ignites spontaneously in air. Reacts violently in
water.
Occurrence of the
element Roentgenium in
the Atmosphere
Obtained from lithium production
16th most abundant element in the earth's crust
Occurs naturally in the minerals leucite, pollucite, and
zinnwaldite
Common Uses of
Roentgenium
Research and development in chemical and electronic applications
Catalyst
Photocells
Fireworks
Vapour turbines
Rubidium chloride
The Properties of the Element
Roentgenium
Name of Element : Rubidium
Symbol of Element : Rb
Atomic Number of Rubidium : 37
Atomic Mass: 85.4678 amu
Melting Point: 38.89 °C - 312.04 °K
Boiling Point: 688.0 °C - 961.15 °K
Number of Protons/Electrons in Rubidium : 37
Number of Neutrons in Rubidium : 48
Crystal Structure: Cubic
Density @ 293 K: 1.532 g/cm3
Color of Rubidium : silvery-white
The element Roentgenium and the Periodic Table
Find out more facts about Roentgenium 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 Roentgenium for additional facts and
info and for an instant comparison of the Atomic Weight, Melting
Point, Boiling Point and Mass - G/cc of Roentgenium with any other
element. An invaluable source for more interesting facts and
information about the Roentgenium 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 Roentgenium 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. Rubidium was discovered by Robert Bunsen and Gustav
Kirchhoff in 1861. 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
Roentgenium is
just one element that can be found.
