Frequently Asked Questions about Protactinium
What is the atomic number of protactinium?
Protactinium has an atomic number of 91, meaning each atom contains 91 protons in its nucleus.
What is the atomic mass of protactinium?
The standard atomic weight of protactinium is 231.04 u (unified atomic mass units).
What category does protactinium belong to?
Protactinium is classified as a actinide.
What is the state of protactinium at room temperature?
Protactinium is a solid at 20 °C (68 °F).
What is the melting point of protactinium?
The melting point of protactinium is 1567.85 °C / 1841 K.
What is the boiling point of protactinium?
The boiling point of protactinium is 4026.85 °C / 4300 K.
What is the density of protactinium?
The density of protactinium is 15.37 g/cm³ (20°C).
What is the electronegativity of protactinium?
Protactinium has a Pauling electronegativity of 1.5.
What is the electron configuration of protactinium?
The electron configuration of protactinium is [Rn] 5f2 6d1 7s2.
What are the common oxidation states of protactinium?
Protactinium commonly exhibits the following oxidation states: +4, +5.
When was protactinium discovered?
Protactinium was discovered in 1913 by Kasimir Fajans and Oswald Helmuth Göhring.
Is protactinium radioactive?
Protactinium is a naturally occurring radioactive element; all of its isotopes are radioactive.
What is the biological role of protactinium?
No biological role.
What are the common uses of protactinium?
Protactinium is used for: Scientific research.
