ʻO Beryllium, helu ʻātoma 4, paona ʻātoma 9.012182, ʻo ia ka māmā māmā o ka metala honua.Ua ʻike ʻia i ka makahiki 1798 e ka mea lapaʻau Farani ʻo Walkerland i ka wā o ka loiloi kemika o beryl a me nā emeralds.I ka makahiki 1828, ua hoemi ka mea chemist German Weiler a me ka Farani chemist Bixi i ka beryllium chloride i hooheheeia me ka metala potassium no ka loaa ana o ka beryllium maemae.Kapa ʻia kona inoa Pelekane ma hope o Weller.ʻO ka maʻiʻo o ka beryllium i loko o ka ʻōpala o ka honua he 0.001%, a ʻo nā minerala nui he beryl, beryllium a me chrysoberyl.He ʻekolu isotopes ka beryllium maoli: beryllium-7, beryllium-8, a me beryllium-10.

ʻO Beryllium kahi metala hina hina;helu heheʻe 1283°C, wahi hoʻolapalapa 2970°C, mānoanoa 1.85 g/cm³, beryllium ion radius 0.31 angstroms, ʻoi aku ka liʻiliʻi ma mua o nā metala ʻē aʻe.

ʻO nā waiwai kemika o ka beryllium he mea ikaika a hiki ke hana i kahi papa pale pale oxide.ʻOiai i ka wela ʻulaʻula, paʻa loa ka beryllium i ka ea.ʻAʻole hiki i ka Beryllium ke hana wale me ka dilute acid, akā hoʻoheheʻe pū i ka alkali ikaika, e hōʻike ana i ka amphoteric.Loaʻa i nā oxides a me nā halides o ka beryllium nā waiwai covalent maopopo, hiki ke hoʻoheheʻe ʻia nā pūhui beryllium i ka wai, a hiki i ka beryllium ke hana i nā polymers a me nā pūhui covalent me ke kūpaʻa wela.

Hoʻohana nui ʻia ka beryllium metala ma ke ʻano he neutron moderator i nā reactor nuklea.Hoʻohana ʻia ka Beryllium copper alloys no ka hana ʻana i nā mea hana ʻaʻole i hoʻohua ʻia, e like me nā ʻāpana neʻe nui o nā aero-engines, nā mea hana pololei, a me nā mea ʻē aʻe. a me ke kūpaʻa wela maikaʻi.He mea ʻawaʻawa nā pūhui Beryllium i ke kino o ke kanaka a ʻo ia kekahi o nā pōʻino ʻoihana koʻikoʻi.