The Element Actinium

What is Actinium? Element Properties & Periodic Table Info

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List of MetalsPeriodic LawPeriodic SymbolWhat is the element Actinium?

Definition of the Actinium Element
Actinium is a radioactive element found in uranium ores, used in equilibrium with its decay products as a source of alpha rays. Actinium has the symbol Ac and atomic number 89.

What is Actinium? Origin / Meaning of the name Actinium
The
name originates from the Greek word 'aktinos' meaning ray or beam and is a one of the "Rare Earth Elements" found in the Actinide series of the Periodic Table.

 

What is Actinium? Periodic Table Group and Classification of the Actinium Element
Elements can be classified based on their physical states (States of Matter) e.g. gas, solid or liquid. This element is a solid. Actinium
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. Nearly 75% of all the elements in the Periodic Table are classified as metals which are detailed in the List of Metals.

Facts about the Discovery and History of the Actinium Element
Actinium was discovered by Andre-Louis Debierne (14 July 1874 - 31 August 1949) in France in 1899. Friedrich Otto Giesel independently discovered actinium in 1902. Andr-Louis Debierne  was a French chemist and is considered the discoverer of the element actinium. Debierne was a close friend of Pierre and Marie Curie and was associated with their work.

What is Actinium? Occurrence of the Actinium Element
Actinium is found in trace amounts in uranium ore.

Abundances of the element in different environments
%
in Universe N/A
% in Sun None
% in Meteorites N/A
% in Earth's Crust N/A
% in Oceans N/A
% in Humans None

Associated Uses of Actinium
A neutron source
Medicine

Ac

The Properties of the Actinium Element
Symbol of Element : Ac
Atomic Number: 89
Atomic Mass: (227.0) amu
Melting Point: 1050.0 C - 1323.15 K
Boiling Point: 3200.0 C - 3473.15 K
Number of Protons/Electrons: 89
Number of Neutrons: 138
Crystal Structure: Cubic
Density @ 293 K: 10.07 g/cm3
Color: Silvery

What is Actinium? The Properties of the Actinium Element
Name of Element : Actinium
Symbol of Element : Ac
Atomic Number of Actinium : 89
Atomic Mass: (227.0) amu
Melting Point: 1050.0 C - 1323.15 K
Boiling Point: 3200.0 C - 3473.15 K
Number of Protons/Electrons in Actinium : 89
Number of Neutrons in Actinium : 138
Crystal Structure: Cubic
Density @ 293 K: 10.07 g/cm3
Color of Actinium : Silvery

Actinium as on the Periodic Table
Check out Actinium on the Periodic Table which arranges each 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 Actinium as on the Periodic Table for additional information and for an instant comparison of the Atomic Weight, Melting Point, Boiling Point and Mass - G/cc with any other element. An invaluable source of facts and information as a Chemistry reference guide.

What is Actinium - 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 and now recognises more periods and elements than Dimitri  Mendeleev knew in his day in his day but still all fitting into his concept of  the "Periodic Table" in which Actinium is just one element that can be found.

Learn about what is what is Actinium with these fast facts...
These articles contain facts and information relating to Actinium and each of the other elements including the Periodic Symbol,  group, classification, properties and atomic number which is often referred to as the Periodic Table Number. Test your knowledge of chemistry and the Periodic Table by completing the Element Symbols and Atomic Numbers on our Blank Periodic Table. Chemistry students will also find a helpful section on Chemical Formulas.

What is the Element Actinium

The Elements are the building blocks of Modern Science & Chemistry


 

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