Radiocarbon dating and the old wood problem Flirt 4 free
It can capture an electron or it can emit a positron.
Electron emission therefore leads to an increase in the atomic number of the nucleus.
Binding energies are usually expressed in units of electron volts (e V) or million electron volts (Me V) per atom.
Neutron-poor nuclides decay by modes that convert a proton into a neutron.
A graph of the number of neutrons versus the number of protons for all stable naturally occurring nuclei.
Nuclei that lie to the right of this band of stability are neutron poor; nuclei to the left of the band are neutron-rich.
The excess energy associated with this excited state is released when the nucleus emits a photon in the -ray portion of the electromagnetic spectrum.
Most of the time, the -ray is emitted within 10Nuclides with atomic numbers of 90 or more undergo a form of radioactive decay known as spontaneous fission in which the parent nucleus splits into a pair of smaller nuclei.