作者howchiu (小秋雨)
看板Chemistry
標題[學習] 請教幾個觀念^^
時間Sat Jun 30 23:33:37 2007
1.The triple point of iodine is at 90 torr and 115度C .
this means that liquid I2 (g)
(A) is more dense than I2 (s)
(B) cannot exist above 115度C
(C) cannot exist at 1 atmosphere pressure
(D) cannot hve a vapor pressur less than 90 torr
(E) can exist at pressure of 10 torr
這題我選的是D 但不知對不對
2.With which of the following elements does silicon form the strongest bond
(A) Si
(B) C
(C) H
(D) O
(E) B
這題應該不是氧和氫 但不知是Si還是B
3.Solid MgO has the same crystal structure as NaCl.
How many oxide ions surround each Mg2+ ion as nearst neighbors in MgO
(A) 4
(B) 6
(C) 8
(D) 10
(E) 12
這題好像是高中的吧 不過太久遠了...
以上 請大家多幫忙^^
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1F：→ nestealee:2. is O 07/01 00:22
2F：→ howchiu:可是Si不是有d軌 不能和氧overlap嗎 ? 07/01 15:59