元素4號,12號,20號,56號和88號的分別

2007-03-03 6:05 am
如題,因為想爆頭也想不到究竟他們之間有甚麼關係!
各位大大,可以幫我一下嗎?

回答 (2)

2007-03-03 6:13 am
✔ 最佳答案
4:Beryllium鈹
12:Magnesium鎂
20:Calcium鈣
56:Barium鋇
88:radium鐳

They are in the same group---group 2.In the same group, they will ave similiar chemical properties...
And there are all metal with outermost shell 2 electrons.
2007-03-03 6:22 am
全部都係第II 族 !!!


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