Duba wurin da ke ƙasa sannan ka amsa tambayar daga baya a cikin harshe ɗaya kamar yadda wurin yake:  Passage: Masanin kimiyyar Soviet D. K. Dobroserdov shi ne masanin kimiyya na farko da ya yi da'awar cewa ya gano eka-caesium, ko francium. A cikin 1925, ya lura da raunin rediyo mai rauni a cikin samfurin potassium, wani ƙarfe na alkali, kuma ya kammala ba daidai ba cewa eka-caesium yana gurɓata samfurin (radioactivity daga samfurin ya kasance daga potassium radioisotope, potassium-40). Daga nan sai ya wallafa wata takarda a kan tsinkayarsa game da kaddarorin eka-caesium, wanda ya kira sunan russium bayan kasarsa. Ba da daɗewa ba bayan haka, Dobroserdov ya fara mai da hankali kan aikinsa na koyarwa a Cibiyar Polytechnic ta Odessa, kuma bai ci gaba da bin abin ba. A shekara mai zuwa, masana kimiyyar Ingilishi Gerald J. F. Druce da Frederick H. Loring sun bincika hotunan X-ray na manganese ((II) sulfate. Sun lura da layin bakan da suke zaton eka-caesium ne. Sun ba da sanarwar gano su kashi 87 kuma sun ba da sunan alkalinium, saboda zai zama ƙarfe mafi nauyi. A cikin 1930, Fred Allison na Cibiyar Nazarin Fasaha ta Alabama ya yi iƙirarin gano kashi 87 lokacin nazarin gurɓataccen abu da lepidolite ta amfani da na'urar maganarsa. Allison ya buƙaci a kira shi virginium bayan jiharsa ta Virginia, tare da alamomin Vi da Vm. A cikin 1934, HG MacPherson na UC Berkeley ya musanta tasirin na'urar Allison da ingancin bincikensa. A cikin 1936, masanin kimiyyar Romaniya Horia Hulubei da abokin aikinsa na Faransa Yvette Cauchois suma sun bincika gurɓataccen abu, a wannan lokacin suna amfani da na'urar X-ray mai ƙarfi. Sun lura da wasu layin da ba su da ƙarfi, waɗanda suka ɗauka su ne na kashi na 87. Hulubei da Cauchois sun ba da rahoton binciken su kuma sun ba da sunan moldavium, tare da alamar Ml, bayan Moldavia, lardin Romania inda aka haifi Hulubei. A cikin 1937, masanin kimiyyar lissafi na Amurka F. H. Hirsh Jr. ya soki aikin Hulubei, wanda ya ƙi hanyoyin binciken Hulubei. Hirsh ya tabbata cewa eka-caesium ba za a samu a yanayi ba, kuma cewa Hulubei ya lura maimakon haka...  Tambaya: Wace lambar ƙarfe ce aka gano a 1930?
Abubuwa 87