An artificial radioactive chemical element with the atomic number 105, atomic weight of 260, and half-life of 1.6 seconds. It is produced by bombarding californium with nuclei of nitrogen.

【化】锆(元素符号 Ha；原子序 105；原子量 260)。为的人造放射性化学元素，半生期为1.6 秒，由氮原子核撞击鉲而产生。