Frequently Asked Questions about Promethium
What is the atomic number of promethium?
Promethium has an atomic number of 61, meaning each atom contains 61 protons in its nucleus.
What is the atomic mass of promethium?
The standard atomic weight of promethium is [145] u (unified atomic mass units).
What category does promethium belong to?
Promethium is classified as a lanthanide.
What is the state of promethium at room temperature?
Promethium is a solid at 20 °C (68 °F).
What is the melting point of promethium?
The melting point of promethium is 1041.85 °C / 1315 K.
What is the boiling point of promethium?
The boiling point of promethium is 2999.85 °C / 3273 K.
What is the density of promethium?
The density of promethium is 7.26 g/cm³ (20°C).
What is the electronegativity of promethium?
Promethium has a Pauling electronegativity of 1.13.
What is the electron configuration of promethium?
The electron configuration of promethium is [Xe] 4f5 6s2.
What are the common oxidation states of promethium?
Promethium commonly exhibits the following oxidation states: +3.
When was promethium discovered?
Promethium was discovered in 1945 by Jacob Marinsky, Lawrence Glendenin, Charles Coryell.
Is promethium radioactive?
Promethium is a naturally occurring radioactive element; all of its isotopes are radioactive.
What is the biological role of promethium?
No biological role.
What are the common uses of promethium?
Promethium is used for: Nuclear batteries; Research.
