The empirical atomic radius of promethium is 183 pm.
The atomic mass of Promethium (Pm) is approximately 145 u (atomic mass units).
Promethium is a chemical element, atomic number 61.
The chemical symbol of promethium is Pm.
Promethium, with the chemical symbol Pm, is the chemical element with the atomic number 61.
Promethium
Promethium is a radioactive rare earth metal with atomic number 61. It is soft, silvery-white in color, and has a high toxicity. Promethium has no stable isotopes and is primarily used in nuclear batteries and as a phosphor for certain types of luminous paint.
Promethium is one of the lanthanoids, atomic number 61, period 6.
145 (no units as atomic weight is dimensionless)
Promethium is a metal in the family of lanthanoids.
Promethium is a chemical element from the lanthanoids family, with the atomic number 61, metal, radioactive.
Isotopes of all elements contain the chemical symbol of the element and:- as a superscript, to left: the mass number of the isotope- as a subscript to left: the atomic number of the elementA correct symbol is not possible to be written on WikiAnswers window.
Hydrogen as the atomic number 1 and promethium has the atomic number 61.