Frequently Asked Questions about Actinium
What is the atomic number of actinium?
Actinium has an atomic number of 89, meaning each atom contains 89 protons in its nucleus.
What is the atomic mass of actinium?
The standard atomic weight of actinium is [227] u (unified atomic mass units).
What category does actinium belong to?
Actinium is classified as a actinide.
What is the state of actinium at room temperature?
Actinium is a solid at 20 °C (68 °F).
What is the melting point of actinium?
The melting point of actinium is 1049.85 °C / 1323 K.
What is the boiling point of actinium?
The boiling point of actinium is 3197.85 °C / 3471 K.
What is the density of actinium?
The density of actinium is 10.07 g/cm³ (20°C).
What is the electronegativity of actinium?
Actinium has a Pauling electronegativity of 1.1.
What is the electron configuration of actinium?
The electron configuration of actinium is [Rn] 6d1 7s2.
What are the common oxidation states of actinium?
Actinium commonly exhibits the following oxidation states: +3.
When was actinium discovered?
Actinium was discovered in 1899 by André-Louis Debierne.
Is actinium radioactive?
Actinium is a naturally occurring radioactive element; all of its isotopes are radioactive.
What is the biological role of actinium?
No biological role.
What are the common uses of actinium?
Actinium is used for: Radiotherapy research; Scientific research.
