For each isotope the number of neutrons is different.
Number of neutrons = Mass number of an Fm isotope - 100
Fermium has 100 protons and electrons. Number of neutrons = Atomic mass of an isotope - Atomic number of the element The atomic number of fermium is 100; but fermium has 17 isotopes, each with a different number of neutrons. For the most stable isotope of fermium, 257Fm: protons-100 electrons-100 neutrons-157 atomic mass per unit (AMU)-257
157
The nucleus of fermium contain 100 protons.For each isotope the number of neutrons is different.Number of neutrons = Mass number of an isotope - 100
Only isotopes Fr-221 and Fr-223 are natural.
Fermium is a synthetic element with the atomic number 100 and symbol Fm. It is named after the physicist Enrico Fermi. Fermium does not exist in nature and is typically produced by bombarding lighter elements with neutrons in a nuclear reactor.
Uranium, i think, its also has 92 protons and 92 electrons
The atomic number (not isotope number) of fermium is 100.
Fermium has seven electron shells.
For the isotope Fm-257 the mass number is 257.
Fermium undergoes primarily alpha decay, where it emits an alpha particle consisting of two protons and two neutrons. This process reduces the atomic number by 2 and the atomic mass by 4.
Fermium and einsteinium were discovered in the debris from the thermonuclear test, Enawetak -1952. And also fermium has the atomic number 100.
The chemical symbol of fermium is Fm; as a subscript in the isotopes symbols is atomic number.