Historically , barium bromide was used to purify radium in a process of fractional crystallization devised by Marie Curie .
It can be used to make zinc bromide . It also is used to purify radium .
It can be used to make zinc bromide . It also is used to purify radium .
簡略化する: Historically , barium bromide was used to purify radium in a process of fractional crystallization devised by Marie Curie . 出力: