二題普化問題請教 - 考試
By Hedy
at 2012-06-01T22:08
at 2012-06-01T22:08
Table of Contents
1. 比較MgCl2 與CsCl的熔點高低?
小弟我想到比較兩者的離子鍵強就代表熔點高
(1) 用電負度差判斷:因為Mg與Cl的電負度差較Cs與Cl的電負度差來得
小所以離子鍵強度: MgCl2 < CsCl
(錯的答案)
(2)用極化現象判斷卻可以解釋離子鍵強度: MgCl2 > CsCl
(對的答案)
2. 比較MgCl2與NaCl的離子性強弱?
小弟我想到用
(1)用電負度差判斷:因為Mg與Cl的電負度差較Na與Cl的電負度差來得
小所以離子鍵強度: MgCl2 < NaCl
(對的答案)
(2)用極化現象判斷解釋離子鍵強度: MgCl2 > NaCl
(錯的答案)
為何兩題相同的問題
用相同的解法確有不同的答案
可以請大大幫忙解惑嗎 感謝
--
小弟我想到比較兩者的離子鍵強就代表熔點高
(1) 用電負度差判斷:因為Mg與Cl的電負度差較Cs與Cl的電負度差來得
小所以離子鍵強度: MgCl2 < CsCl
(錯的答案)
(2)用極化現象判斷卻可以解釋離子鍵強度: MgCl2 > CsCl
(對的答案)
2. 比較MgCl2與NaCl的離子性強弱?
小弟我想到用
(1)用電負度差判斷:因為Mg與Cl的電負度差較Na與Cl的電負度差來得
小所以離子鍵強度: MgCl2 < NaCl
(對的答案)
(2)用極化現象判斷解釋離子鍵強度: MgCl2 > NaCl
(錯的答案)
為何兩題相同的問題
用相同的解法確有不同的答案
可以請大大幫忙解惑嗎 感謝
--
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考試
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