Linked from
The 6 pages that link to Berkelium, each with the reason it gives.
Glenn T. SeaborgBroader topic: Its discovery extended the actinide sequence beyond curium.
TennessineRelated: Berkelium-249 formed the target nucleus for the calcium-48 fusion experiments.
CaliforniumCompared with: Berkelium directly precedes californium in the actinide series.
CuriumCompared with: Its position next to curium makes it a direct comparison in actinide chemistry.