低B迪 2013-5-4 13:22
拜託幫我分一下m(_ _)m
Predict the type of compound（ionic＼covalent）formed when each of the
following pairs of elements combine.
a.phosphorus and hydrogen
b.magnesium and nitrogen
c.silicon and chlorine
d.carbon and oxygen
ebony 2013-5-4 13:51
女兒~媽咪來幫妳了
在我看起來
感覺裡面沒有離子鍵啊?
因為離子鍵通常是金屬離子吧?
感覺全不都是共價鍵?
裡面只有鎂和氯平常會以離子形態存在吧?(歪頭
低B迪 2013-5-4 14:14
[quote]原帖由 [i]ebony[/i] 於 2013-5-4 13:51 發表 [url=http://ds-hk.net/redirect.php?goto=findpost&pid=4183895&ptid=245847][img]http://ds-hk.net/images/common/back.gif[/img][/url]
女兒~媽咪來幫妳了
在我看起來
感覺裡面沒有離子鍵啊?
因為離子鍵通常是金屬離子吧?
感覺全不都是共價鍵?
裡面只有鎂和氯平常會以離子形態存在吧?(歪頭 [/quote]
媽咪啊(つД`)ノ
我給他搞到一團霧(T ^ T)
ebony 2013-5-4 14:38
回應 低B迪 第 3 篇文章
我確定d一定是共價鍵
其他相對來說用判斷的話感覺也都是共價
如果硬要是要有離子鍵的話
應該就是b了
小冰 2013-5-4 15:09
A is covalent bond.B is ionic bond, C is covalent bond D is covalent bond
小冰 2013-5-4 15:12
reasons are as followed,
covalent bond is formed when elements share their electrons in their outermost electron shell
ionic bond is formed when metals donate their outermost electron and non-metals accept the electrons from metal. the attraction between positively charged metal ions and negativily charged non-metal ions is ionic bond.
Thus, ionic bond is generally formed when a metal reacts with a non-metal, like choice B.
Covalent bond is generally formed when one or more atoms of non-metals react, like choice A C and D
我就是王道0v0 2013-5-9 17:54
小雨
原來你是讀chemistry的!!
勇氣可嘉!! ;xk330;