镎代表什么生肖？
答主也是今天才知道…… 《元素周期表》里，每个元素的特性结尾都有一个小注释，叫“Notes for students”，意思是供学生参考。其中关于镎的注释是这样的： Note for Students： Discovered in 1938 by K. T. Bainbridge and J. M. Zawischa at the University of California at Berkeley. Np was a byproduct from trying to produce plutonium for atomic bomb work during World War II (Np is an isotope of Pu). The first nuclear reactors were discovered as a result of attempts to separate the heavy water used at the time to slow neutrons so they would hit the target nuclei in the chain reactions that create energy from nuclear fission. This reaction also produced large quantities of radioactive Np， which subsequently led to its discovery. It has been said that this element could not have been named earlier because it took 20 years or more after the fact before the scientists who made these discoveries could be persuaded to reveal their secret research.
所以很明显，这个note是在说，由于当时处于二战时期，为了生产核武器，制造了用于减速中子的重水（用来让中子轰击靶核产生链式反应释放能量），但是重水的制备需要锂，而锂的同位素6Li又很难分离，于是就制备了含超高浓度锂的混合物，并意外地发现了103号元素——锎。而锎衰变产生的镅又可以帮助提取到锂，然后经过多次循环最终得到了满足要求的锂。然而这个过程也产生了副产品，就是镎。 所以这玩意儿怎么可能是十二生肖里的某个动物……真是无语。