- the electronegativity of actinium is 1,1
- actinium is trivalent (excepting in AcH2)
- actinium react easily with oxygen, halogens, water vapors, acids
some chemical properties areexplosive, flammable, and radioactive.
Actinium (Ac) is a chemical element with the atomic number 89, located in the actinide series of the periodic table. It is a radioactive metal that is primarily used in research and some specialized industrial applications.
Francium was discovered by Marguerite Perey in 1939 during a study on actinium-227: she observed an energy level possibly attributable to a new element. After some chemical experiments she was sure that the radiation is from a new chemical element, after this called francium.
Francium was discovered by Marguerite Perey in 1939 during a study on actinium-227: she observed an energy level possibly attributable to a new element. After some chemical experiments she was sure that the radiation is from a new chemical element, after this called francium.
Francium was discovered by Marguerite Perey (from France) in 1939 during a study on actinium-227: she observed an energy level possibly attributable to a new element. After some chemical experiments she was sure that the radiation is from a new chemical element, after this called francium.
ActinidesThis is a group of elements within the periodic table and are also known as the transuranics. The name refers to those elements with increasing atomic no. from actinium, which all have similar chemical properties, like the lanthanides. The first few members of the group are the naturally occurring elements actinium, thorium, proactinium and uranium. Beyond this elements have been made artificially by radioactive bombardment. These artificial elements are unstable, some have very short lifeimes and undergo spontaneous radioactive decay.
Helium is chemically inert; it does not combine with any other element.
The name of an element usually represents its chemical identity and is based on characteristics such as color, origin, or properties. Elements are organized on the periodic table by their atomic number and chemical properties.
Boiling point, melting point, and density are all physical properties of an element. They determine the state of the element.
An element's chemical properties are primarily determined by its electron configuration, which dictates how it interacts with other atoms to form compounds. Other factors include the number of protons in the nucleus, which affects its reactivity and chemical behavior, as well as its position on the periodic table, which can provide insights into its properties based on trends within a group or period.
Actinium is a highly reactive element that can react with air, water, and acids to form compounds. It can react with oxygen to form actinium oxide, with nitrogen to form actinium nitride, and with dilute acids to form various salts.
All the isotopes of a chemical element are identical; some differences exist for light elements (ex. H or D).