Fissile rule
Encyclopedia
According to the Fissile rule, heavy isotope
s with 90 ≤ Z ≤ 100 and 2Z-N=43 ± 2, with few exceptions, are fissile (N – number of neutron
s and Z – number of proton
s).
Isotope
Isotopes are variants of atoms of a particular chemical element, which have differing numbers of neutrons. Atoms of a particular element by definition must contain the same number of protons but may have a distinct number of neutrons which differs from atom to atom, without changing the designation...
s with 90 ≤ Z ≤ 100 and 2Z-N=43 ± 2, with few exceptions, are fissile (N – number of neutron
Neutron
The neutron is a subatomic hadron particle which has the symbol or , no net electric charge and a mass slightly larger than that of a proton. With the exception of hydrogen, nuclei of atoms consist of protons and neutrons, which are therefore collectively referred to as nucleons. The number of...
s and Z – number of proton
Proton
The proton is a subatomic particle with the symbol or and a positive electric charge of 1 elementary charge. One or more protons are present in the nucleus of each atom, along with neutrons. The number of protons in each atom is its atomic number....
s).