berkelium

名词 berkelium:

1. a radioactive transuranic element; discovered by bombarding americium with helium
   同义词：Bk, atomic number 97

ber.ke.li.um

n.Symbol Bk （名词）符号 Bk
A synthetic transuranic radioactive element having 9 isotopes with mass numbers from 243 to 250 and half-lives from 3 hours to ,380 years. Atomic number 97; melting point 98'=C; valence 3, 4.See table at element
锫：一种人造的铀后放射元素，有9个大数字的同位素，从243到250，半衰期从3小时到,380年。原子序数为97；熔点98'=C；原子价3，4参见 element

来源：
After Berkeley [California]
源自 Berkeley[加利福尼亚]