作者yacat (唉唷)
看板Chemistry
標題兩個問題
時間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
--
※ 發信站: 批踢踢實業坊(ptt.cc)
◆ From: 220.228.152.252
1F:推 capinot:都是(A) 02/26 21:21
2F:推 nestealee:D&C 02/26 21:36
3F:推 shok:我選 1D 2C 02/26 22:43
5F:推 yacat:感謝樓上的,第二題我會了。不過第ㄧ題為何選(C)呢? 02/26 23:06
6F:→ shok:第一題 我是選D 好像有背過Be Al Cr Zn Ga Sn Pb 氧化物 兩性 02/26 23:09
7F:推 yacat:喔 抱歉 看錯了! >"< 真糟糕 沒背過耶! 02/26 23:13