Beryllium, lambar atomic 4, atomic nauyi 9.012182, shine mafi ƙarancin ƙarfe na ƙasa.Wani masanin kimiyar Faransa Walkerland ne ya gano shi a cikin 1798 a lokacin nazarin sinadarai na beryl da emeralds.A shekara ta 1828, masanin kimiyar Jamus Weiler da Ba'isin chemist na Faransa sun rage narkakken beryllium chloride tare da ƙarfe na potassium don samun beryllium mai tsabta.Sunan Ingilishi sunansa bayan Weller.Abubuwan da ke cikin beryllium a cikin ɓawon ƙasa shine 0.001%, kuma manyan ma'adanai sune beryl, beryllium da chrysoberyl.Beryllium na halitta yana da isotopes guda uku: beryllium-7, beryllium-8, da beryllium-10.

Beryllium karfe ne mai launin toka;Matsayin narkewa 1283 ° C, wurin tafasa 2970 ° C, yawa 1.85 g/cm³, beryllium ion radius 0.31 angstroms, karami fiye da sauran karafa.

Abubuwan sinadarai na beryllium suna aiki kuma suna iya samar da kariyar kariya mai yawa.Ko da a cikin ja zafi, beryllium yana da kwanciyar hankali a cikin iska.Beryllium ba zai iya amsawa kawai tare da acid dilute ba, amma kuma ya narke a cikin alkali mai ƙarfi, yana nuna amphoteric.Oxides da halides na beryllium suna da abubuwan haɗin kai na zahiri, mahadi na beryllium suna cikin sauƙi bazuwa cikin ruwa, kuma beryllium na iya samar da polymers da mahaɗan covalent tare da tabbataccen kwanciyar hankali na thermal.

Karfe beryllium ana amfani da shi azaman mai daidaitawa na neutron a cikin injinan nukiliya.Beryllium jan ƙarfe ana amfani da shi don yin kayan aikin da ba sa samar da tartsatsin wuta, kamar mahimman sassa masu motsi na injina, injunan kayan aiki, da sauransu. da kwanciyar hankali na thermal mai kyau.Abubuwan da ake kira Beryllium suna da guba ga jikin ɗan adam kuma suna ɗaya daga cikin manyan haɗarin masana'antu.