作者yacat (唉唷)
看板Chemistry
标题两个问题
时间Sun Feb 26 21:20:49 2006
Q1:which of the following substances is not amphoteric?
(A)H2O
(B)Ga2O3
(C)Al(OH)3
(D)In2O3
Q2:which of the following compounds possess the so called
"three-center bond"?
(A)solid BeCl2
(B)PCl3
(C)solid BeH2
(D)PH3
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1F:推 capinot:都是(A) 02/26 21:21
2F:推 nestealee:D&C 02/26 21:36
3F:推 shok:我选 1D 2C 02/26 22:43
5F:推 yacat:感谢楼上的,第二题我会了。不过第ㄧ题为何选(C)呢? 02/26 23:06
6F:→ shok:第一题 我是选D 好像有背过Be Al Cr Zn Ga Sn Pb 氧化物 两性 02/26 23:09
7F:推 yacat:喔 抱歉 看错了! >"< 真糟糕 没背过耶! 02/26 23:13