更新1:
急需!!! 幫幫手!!!!!!!!!!!
更新2:
can you 詳細地說呢!!!!please!!!!
更新3:
why group II is very 敏感呢??
更新4:
For lack of your answer ,Group I is very 想 do 一種穩定 gas???For example :鉀.......
急需!!! 幫幫手!!!!!!!!!!!
can you 詳細地說呢!!!!please!!!!
why group II is very 敏感呢??
For lack of your answer ,Group I is very 想 do 一種穩定 gas???For example :鉀.......
收錄日期: 2021-04-23 18:57:10
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20071126000051KK01760