錇者,亦作鉳,化學元素也,符號Bk,原子序九十七,屬錒系,乃人工製之。其色銀白,性稍軟,一九四九年末,加州大學輻射實驗室擊鎇以氦核得之。名以加州伯克利市。
已知錇同位素凡二十一,自錇二三三至錇二五四,皆具放射性。性至穩者錇二四七,每一千三百八十年折半,錇二四八亦穏,其半衰逾三稘。餘者半衰止數日,數小時,甚數毫秒、微秒而已。
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