作者piperyim (Dreams come true)
看板TransBioChem
标题Re: [化学] 普化问题
时间Mon Apr 9 15:07:05 2012
※ 引述《jimmy30637 (昝肥)》之铭言：
: 1.Predict and explain which substance in each of the following pairs would have
: the greater intermolecular forces.
: a. CO2 or OCS b. CH3CH3 or H2CO
: 请问要怎麽比分子间作用力(凡德瓦力)
有氢键最大 在来看分子量 分子像相近者看极性
所以OCS > CO2 H2CO3(有3吧?)>CH3CH3
: 2.Determine (1) the electron configuration, (2) bond order, and (3) magnetism
: 2- 2- -
: for S2, N2, and CN.
: 这题请问是要先把路易士结构画出来吧 请问(3)要怎麽判断磁性?
2 ＊2 2 4 ＊4
用MO S2^2-:σ3S σ3S σ3P π3P π3P diamegnetic, bond order=1
2- 2 ＊2 4 2 *2
N2 :σ2S σ2S π2P σ2P π2P paramegnetic, bond order=2
- 2 *2 4 2
CN : σ2S σ2S π2P σ2P diamegnetic bond order=3
: 3.Write Lewis structures that obey the octet rule for the following species.
: Assign the formal charge for each central atom.
: 3-
: a. SO2Cl2 b. NO4
用BBS好难画 大概是把所有情形画出来
以上答案还要强者监定
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◆ From: 140.112.25.108
1F：推 jimmy30637:请问BOND ORDER是? 04/11 10:10
2F：→ luckywu7557:键序(数) 04/11 13:11