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北京石油化工学院2026年研究生招生接收调剂公告
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GarciaShieh

金虫 (小有名气)

[求助] size of MgSO4 molecular 已有1人参与

H2O分子size约为0.275nm,即2.75埃,请问MgSO4分子的size是多大呢?
因本人化学基础差,不懂得如何计算(包括键长的考虑等)。
求教各位大侠帮助!最好能附上计算过程或者是您考虑的因素。不胜感激!

size of water molecular, 附上链接http://www1.lsbu.ac.uk/water/water_molecule.html,原文太长了不便附上。
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jiagle

专家顾问 (知名作家)

【答案】应助回帖


感谢参与,应助指数 +1
冰点降温: 金币+1, 谢谢专家应助解答,辛苦了。 2016-10-25 12:10:38
冰点降温: 回帖置顶 2016-10-25 12:10:51
MgSO4又不是分子,哪里来人size?想多了。
5楼2016-10-25 09:30:45
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GarciaShieh

金虫 (小有名气)

引用回帖:
2楼: Originally posted by 2514414 at 2016-10-24 23:43:07
da bu kai

我把那个链接里相关的东西截图,请看图片~
size of MgSO4 molecular
1.jpg


size of MgSO4 molecular-1
2.jpg


size of MgSO4 molecular-2
3.jpg

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3楼2016-10-25 09:13:39
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GarciaShieh

金虫 (小有名气)

引用回帖:
2楼: Originally posted by 2514414 at 2016-10-24 23:43:07
da bu kai

还提到说,The atomic diameter can be determined from interpolation of the effective ionic radii of the isoelectronic ions.
size of MgSO4 molecular-3
4.jpg

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4楼2016-10-25 09:28:14
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GarciaShieh

金虫 (小有名气)

引用回帖:
5楼: Originally posted by jiagle at 2016-10-25 09:30:45
MgSO4又不是分子,哪里来人size?想多了。

我原本想表述的应该是radius of MgSO4,已经找到啦,Dion-solution=0.2094nm,直径应该是2.094×2埃
原文中相关内容摘录如下:
Molecules, being in general non-spherical, cannot simply be assigned radii, but mean radii can be assigned to them from their experimentally determined "collision diameters"
Most of the information on the sizes of ions comes traditionally from the study of such solids, following the observation that the interionic distantces Dion-ion in their crystals are additive in terms of the contributions of the cation and the anion.
it is not immediately obvious that the radii of ions that were establised in crystalline compounds, whether on the basis of interionic distances Dion-ion or on the basis of theirmochemical data, are also applicable to ions in liquid solutions.
size of MgSO4 molecular-4
555.jpg

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6楼2016-10-25 11:05:27
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