In which of the following diatomic molecular would the bond strength
be expected to weaken as an electron is removed to form the positive
charged ion ? why ?
a. H2 b. N2 c. B2 d. OF
謝謝您 ~ ~
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作者: cheyu (....) 站內: TransBioChem
標題: Re: [普化] 請問一個問題
時間: Mon Apr 25 13:39:20 2005
※ 引述《jas3 (...)》之銘言：
: In which of the following diatomic molecular would the bond strength
: be expected to weaken as an electron is removed to form the positive
: charged ion ? why ?
: a. H2 b. N2 c. B2 d. OF
: 謝謝您 ~ ~
我想答案是A
因為氫是單鍵
要打斷最容易
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作者: yiso (myiso) 看板: TransBioChem
標題: Re: [普化] 請問一個問題
時間: Tue Apr 26 15:43:21 2005
※ 引述《jas3 (...)》之銘言：
: In which of the following diatomic molecular would the bond strength
: be expected to weaken as an electron is removed to form the positive
: charged ion ? why ?
: a. H2 b. N2 c. B2 d. OF
: 謝謝您 ~ ~
其實這題是考雙原子分子的MO,並由鍵級(bond order)判斷鍵能
bond order越大,鍵能越強
未移走電子前(中性) 移走電子後(帶正電)
H2 1 1/2
N2 3 5/2
B2 1 1/2
OF 3/2 2
所以移走電子後會減弱鍵能的:H2,N2,B2
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