应《网络安全法》要求，自2017年10月1日起，未进行实名认证将不得使用互联网跟帖服务。为保障您的帐号能够正常使用，请尽快对帐号进行手机号验证，感谢您的理解与支持！

24小时热门版块排行榜    

小木虫论坛-学术科研互动平台 » 计算模拟区 » 第一性原理 » 其他 » 【转帖】内聚能，结合能，电离能辨析
111/2返回列表12下一页
查看: 5724  |  回复: 10
只看楼主 @他人 存档 新回复提醒 (忽略) 收藏    在APP中查看

wuli8

荣誉版主 (知名作家)

…………

优秀版主优秀版主

[交流] 【转帖】内聚能，结合能，电离能辨析 已有7人参与



参考文献：
回复此楼

» 收录本帖的淘帖专辑推荐

第一性原理相关文档 研究生科研、学习 纳米及第一性原理方向 基本量化知识
学习 第一性原理计算-tg

» 猜你喜欢

» 本主题相关价值贴推荐，对您同样有帮助:
…………
1楼 2010-10-25 20:14:01
已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖
回帖支持 ( 显示支持度最高的前 50 名 )

zzy870720z

荣誉版主 (文坛精英)

优秀版主优秀版主优秀版主优秀版主
★ ★
小木虫(金币+0.5):给个红包，谢谢回帖交流
ellsaking(金币+1): 欢迎回帖交流 2011-02-15 17:34:52
发现自己原来的理解是有错误的，结合能不等价于内聚能
原来计算的都是内聚能
赞一下(3人) 回复此楼
博学、审问、慎思、明辨、笃学
3楼2010-11-12 22:06:54
已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖
普通回帖

wuli8

荣誉版主 (知名作家)

…………

优秀版主优秀版主
图片显示的慢
回复此楼
…………
2楼2010-10-25 21:14:46
已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖

倚天舰

木虫 (小有名气)
★
小木虫(金币+0.5):给个红包，谢谢回帖交流
这个确实很容易搞混，谢谢楼主
赞一下(1人) 回复此楼
4楼2010-11-13 09:25:55
已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖

ykwang

金虫 (正式写手)
★ ★ ★
小木虫(金币+0.5):给个红包，谢谢回帖交流
zzy870720z(金币+2):谢谢补充 2010-11-13 11:56:30
引用回帖:
Originally posted by zzy870720z at 2010-11-12 22:06:54:
发现自己原来的理解是有错误的，结合能不等价于内聚能
原来计算的都是内聚能

版主原来的理解不一定是错的，因为结合能(Bing energy)在不同的科学领域其含义是不同的。详见
http://old.iupac.org/reports/1999/7110minkin/b.html
和
http://en.wikipedia.org/wiki/Binding_energy
赞一下(3人) 回复此楼
Nothing_Is_Impossible!
5楼2010-11-13 10:36:09
已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖

zzy870720z

荣誉版主 (文坛精英)

优秀版主优秀版主优秀版主优秀版主
★
小木虫(金币+0.5):给个红包，谢谢回帖交流
引用回帖:
Originally posted by ykwang at 2010-11-13 10:36:09:


版主原来的理解不一定是错的，因为结合能(Bing energy)在不同的科学领域其含义是不同的。详见
http://old.iupac.org/reports/1999/7110minkin/b.html
和
[url]http://en.wikipedia.org/wiki/Bi ...

谢谢提示
呵呵，看来得具体问题具体分析
赞一下(1人) 回复此楼
博学、审问、慎思、明辨、笃学
6楼2010-11-13 11:56:07
已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖

wuli8

荣誉版主 (知名作家)

…………

优秀版主优秀版主
★ ★
ellsaking(金币+2): 谢谢补充~~ 2011-02-15 17:35:23
Binding energy - The difference between the total energy of a molecular system and the sum of the energies of its isolated p- and s-bonds. The value of binding energy depends upon the geometrical arrangement of the isolated subunits (molecules). According to another definition, the term to be substracted from the total energy is the sum of the energies of the separate atoms in the corresponding valence states, which compose the molecule. PAULING (1960).http://old.iupac.org/reports/1999/7110minkin/b.html
赞一下(1人) 回复此楼
…………
7楼2010-11-13 13:39:01
已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖

zzy870720z

荣誉版主 (文坛精英)

优秀版主优秀版主优秀版主优秀版主
★ ★ ★ ★ ★ ★
小木虫(金币+0.5):给个红包，谢谢回帖交流
ellsaking(金币+5): 谢谢补充，辛苦了 2011-02-15 17:35:41
Binding energy is the mechanical energy required to disassemble a whole into separate parts. A bound system typically has a lower potential energy than its constituent parts; this is what keeps the system together- often this means that energy is released upon the creation of a bound state. The usual convention is that this corresponds to a positive binding energy.

In general, binding energy represents the mechanical work which must be done against the forces which hold an object together, disassembling the object into component parts separated by sufficient distance that further separation requires negligible additional work.

At the atomic level the atomic binding energy of the atom derives from electromagnetic interaction and is the energy required to disassemble an atom into free electrons and a nucleus.

Electron binding energy is a measure of the energy required to free electrons from their atomic orbits. This is more commonly known as ionization energy.

At the nuclear level, binding energy is also equivalent to the energy liberated when a nucleus is created from other nucleons or nuclei[2][3]. This nuclear binding energy (binding energy of nucleons into a nuclide) is derived from the strong nuclear force and is the energy required to disassemble a nucleus into the same number of free unbound neutrons and protons it is composed of, so that the nucleons are far/distant enough from each other so that the strong nuclear force can no longer cause the particles to interact[4].

In astrophysics, gravitational binding energy of a celestial body is the energy required to expand the material to infinity. This quantity is not to be confused with the gravitational potential energy, which is the energy required to separate two bodies, such as a celestial body and a satellite, to infinite distance, keeping each intact (the latter energy is lower).

In bound systems, if the binding energy is removed from the system, it must be subtracted from the mass of the unbound system, simply because this energy has mass, and if subtracted from the system at the time it is bound, will result in removal of mass from the system[5]. System mass is not conserved in this process because the system is not closed during the binding process.

http://en.wikipedia.org/wiki/Binding_energy

大家可以对比一下，还是中文的好理解
电离能可以是电子结合能
赞一下(2人) 回复此楼
博学、审问、慎思、明辨、笃学
8楼2010-11-13 14:41:26
已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖

study163

木虫 (正式写手)

天生我材
★ ★ ★ ★
小木虫(金币+0.5):给个红包，谢谢回帖交流
ellsaking(金币+3): 谢谢补充~ 2011-02-15 17:35:54
两个或几个自由状态的粒子结合在一起是释放的能量.自由原子结合为分子时放出的能量叫做化学结合能,分散的核子组成原子核时放出的能量叫做原子核结合能.

具体情况具体分析吧，结合能分好多种。
赞一下(2人) 回复此楼
我的计算我做主
9楼2010-11-13 20:29:44
已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖

火柴天堂7909

金虫 (小有名气)
★ ★ ★
小木虫(金币+0.5):给个红包，谢谢回帖交流
ellsaking(金币+2): 欢迎回帖交流 2011-02-15 17:36:04
引用回帖:
Originally posted by wuli8 at 2010-11-13 13:39:01:
Binding energy - The difference between the total energy of a molecular system and the sum of the energies of its isolated p- and s-bonds. The value of binding energy depends upon the geometrical a ...

请问大侠为什么要减去孤立的p- and s-bonds的能量呢？还有在MS的帮助文件中对于cohesive energy的定义还引入了intra和inter energy，请问这种定义和上述Pauling给出的定义是否一致呢？
赞一下(2人) 回复此楼
物质的本质是运动，运动的本质是能量
10楼2011-02-15 14:14:13
已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖
相关版块跳转 我要订阅楼主 wuli8 的主题更新
111/2返回列表12下一页
普通表情 龙 兔 虎 猫 高级回复 (可上传附件)
信息提示
关闭
请填处理意见
关闭