That's impossible. The atomic mass is the number of protons plus the number of neutrons.If you meant the element with atomic number 61, the name is Promethium. But it doesn't have 108 neutrons.
Promethium exist in nature only in traces; it is supposed that the Earth crust contain less than 1 kg promethium.
Promethium is a chemical element with the symbol Pm and an atomic number of 61. It is solid at room temperature.
Promethium, Pm, atomic number 61
Promethium is a chemical element with the symbol Pm and atomic number 61
That's impossible. The atomic mass is the number of protons plus the number of neutrons.If you meant the element with atomic number 61, the name is Promethium. But it doesn't have 108 neutrons.
The empirical atomic radius of promethium is 183 pm.
The chemical symbol of promethium is Pm.
Promethium is a chemical element, atomic number 61.
Promethium, with the chemical symbol Pm, is the chemical element with the atomic number 61.
Hydrogen as the atomic number 1 and promethium has the atomic number 61.
Promethium
145 (no units as atomic weight is dimensionless)
Promethium is one of the lanthanoids, atomic number 61, period 6.
Promethium is a chemical element from the lanthanoids family, with the atomic number 61, metal, radioactive.
Promethium is a metal in the family of lanthanoids.
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.