I-Beryllium, inombolo ye-athomu 4, isisindo se-athomu 9.012182, iyingxenye yensimbi ye-alkaline yomhlaba elula kakhulu.Itholwe ngo-1798 ngusokhemisi waseFrance u-Walkerland ngesikhathi sokuhlaziywa kwamakhemikhali e-beryl ne-emerald.Ngo-1828, usokhemisi waseJalimane u-Weiler kanye nosokhemisi ongumFulentshi u-Bixi banciphisa i-beryllium chloride encibilikisiwe ngensimbi ye-potassium ukuze bathole i-beryllium emsulwa.Igama layo lesiNgisi liqanjwe ngo-Weller.Okuqukethwe kwe-beryllium ku-crust yomhlaba ngu-0.001%, futhi amaminerali amakhulu i-beryl, i-beryllium ne-chrysoberyl.I-beryllium yemvelo inama-isotopes amathathu: i-beryllium-7, i-beryllium-8, ne-beryllium-10.

I-Berryllium iyinsimbi empunga yensimbi;iphoyinti elincibilikayo 1283°C, iphoyinti elibilayo 2970°C, ukuminyana 1.85 g/cm³, i-beryllium ion radius 0.31 angstroms, incane kakhulu kunezinye izinsimbi.

Amakhemikhali e-beryllium ayasebenza futhi angakha ungqimba oluvikelayo lwe-oxide.Ngisho nasekushiseni okubomvu, i-beryllium izinzile emoyeni.I-Berryllium ayikwazi ukusabela kuphela nge-asidi ehlanjululwe, kodwa futhi incibilika ku-alkali eqinile, ebonisa i-amphoteric.Ama-oksidi nama-halides e-beryllium anezakhiwo ezicacile ze-covalent, izinhlanganisela ze-beryllium zibola kalula emanzini, futhi i-beryllium nayo ingakha ama-polymers kanye nama-covalent compounds anokuqina okushisayo okusobala.

I-Metal beryllium isetshenziswa kakhulu njengomongameli we-neutron kuma-reactors enuzi.Ama-alloys ethusi e-beryllium asetshenziselwa ukwenza amathuluzi angazikhiqizi izinhlansi, njengezingxenye ezibalulekile ezihambayo zezinjini ze-aero, izinsimbi ezinembile, njll. I-Berryllium isiphenduke into ekhangayo yesakhiwo yezindiza nemicibisholo ngenxa yesisindo sayo esilula, i-modulus ephezulu yokunwebeka. nokuzinza okuhle kokushisa.I-Beryllium compounds inobuthi emzimbeni womuntu futhi ingenye yezingozi ezinkulu zezimboni.