Promethium, with the chemical symbol Pm, is the chemical element with the atomic number 61.
Promethium is a chemical element, atomic number 61.
Promethium
Promethium is one of the lanthanoids, atomic number 61, period 6.
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.
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.
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.
When promethium-165 (Pm-165), which has an atomic number of 61, undergoes beta decay, it transmutates into neodymium-165 (Nd-165), which has an atomic number of 60. In this process, a neutron in the promethium nucleus is converted into a proton, emitting a beta particle (an electron) and an antineutrino. This results in an increase in the atomic number by one, changing the element to neodymium while the mass number remains the same.
The atomic mass of Promethium (Pm) is approximately 145 u (atomic mass units).
The chemical symbol of promethium is Pm.