The properties of an electride depend largely on the distance between the cavities that hold trapped electrons. When the trapped electrons are far apart, they do not interact strongly, and so behave somewhat like an array of isolated negative charges.
lz是不是想说,想选出答案,文章缺少isolated negative charges=normal ionic crystal这个信息?
After perusing,的确如此。不至于ETS默认晶体结构是common sense了吧……