Rangarira ndima iri pasi apa uye ipapo pindura mubvunzo gare gare mumutauro mumwe chetewo sechikamu:  Kupfuura: Pakati pa1885, mumugodhi uri pedyo neFreiberg, Saxony, mineral itsva yakawanwa uye yakatumidzwa kuti argyrodite nemhaka yokuwanda kwesirivha. Nyanzvi yemakemikari Clemens Winkler yakaongorora mineral itsva iyi, iyo yakabvumikisa kuva mubatanidzwa wesirivha, sarufa, uye chinhu chitsva. Winkler akakwanisa kuparadzanisa chinhu chitsva chacho muna 1886 ndokuchiwana chakafanana neantimony. Pakutanga akafunga kuti chinhu chitsva chacho chaiva eka-antimony, asi akakurumidza kugutsikana kuti chaiva eka-silicon. Winkler asati abudisa migumisiro yake yechinhu chitsva chacho, akasarudza kuti aizotumidza chinhu chacho kuti neptunium, sezvo kuwanwa kwepuraneti yeNeptune munguva pfupi yapfuura muna 1846 kwakanga kwatangirwawo nokufanotaura kwamasvomhu kwokuvapo kwayo. Zvisinei, zita rokuti "neptunium" rakanga ratopiwa kare kune chimwe chinhu chemakemikoro chakarongwa (kunyange zvazvo chisiri chinhu icho nhasi chine zita rokuti neptunium, icho chakawanwa muna 1940). Naizvozvo panzvimbo pezvo, Winkler akatumidza chinhu chitsva chacho kuti germanium (kubva mushoko rechiLatin, Germania, nokuda kweGermany) mukukudza nyika yokumusha kwake. Argyrodite yakaratidzirwa nenzira yokunzvera kuva Ag8GeS6.  Mubvunzo: Winkler pakutanga akatumidza kuwanwa kwake kuti chii?
neptunium