菜鸟一个 不知道标题表达清楚了米有
比如AlMn4,要计算化合物价电子浓度,怎么先算出Al 和Mn的化合价。
The average composition was 35 at.% Be, 15 at.% Mn and 50 at.% Al. The electron-to-atom ratio e/a for this composition
was 1.65 (valences of Be, Al and Mn were taken +2, +3 and −3.66, respectively [17]).
这是文献里面的,不知道那些价态是如何得到的,还请大神指点~~~~