KnowraNeptuniumLinked fromLinked fromThe 6 pages that link to Neptunium, each with the reason it gives.All 6Broader topic 4Compared with 2Transuranium elementBroader topic: It was the first element found beyond uranium.Edwin McMillanBroader topic: McMillan and Philip Abelson identified this first transuranium element by irradiating uranium.Actinide seriesBroader topic: It is the first transuranium element and links uranium to heavier actinides.Actinide conceptBroader topic: Its discovery helped establish that elements beyond uranium belonged to a coherent series.