Linked from
The 15 pages that link to Decay chain, each with the reason it gives.
Radioactive decayRelated: Some decay products continue transforming through multiple generations.
Half-lifeRelated: Each nuclide in a chain can have a different half-life.
RadionuclideRelated: A radionuclide may be one stage in a longer series of nuclear transformations.
UnbiuniumRelated: Correlated decay events could identify an unbiunium atom and its descendants.
HassiumRelated: Correlated decay chains provide evidence that a short-lived hassium atom was formed.
Decay productRelated: A product can become the parent nuclide in later steps of a chain.