點解copper(Ⅱ)chloride同aluminium oxide同樣係compound,
但係copper(Ⅱ)chloride就有(Ⅱ)響中間?
(Ⅱ)究竟有咩意思?
另外我又見到有個silicon(Ⅳ)oxide,
點解係(Ⅳ)吾係(Ⅱ)呢?
吾該!
收錄日期: 2021-04-13 16:18:56
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20081220000051KK01149