piyopiyo 發表於 27-4-2008 16:15:43

咩叫dipole attraction
點解會無教過[]

[H]bunbunbunbun 發表於 27-4-2008 16:26:46

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我老師好熱心教好多out sy 野-,-

係H-Cl入面
H係+ve, Cl係-ve
咁H同另一個HCl入面0既Cl就有一個attraction
呢個係dipole-dipole attraction

Zend 發表於 27-4-2008 16:37:48

原帖由 bunbunbunbun 於 27-4-2008 04:26 PM 發表 http://www1.nakuz.com/bbs/images/common/back.gif
我老師好熱心教好多out sy 野-,-

係H-Cl入面
H係+ve, Cl係-ve
咁H同另一個HCl入面0既Cl就有一個attraction
呢個係dipole-dipole attraction
H 係slightly positive, Cl 係slightly negative <= due to EN difference
所以個bonding e- cloud 係partly shift towards the internuclear axis of Cl=> permanent dipole is formed
同adjacent molecules , 有相反charge 的attraction 係叫permanent-dipole permanent-dipole interaction/ attraction
佢d molecules 比較自然會oriented 去一個form in which repulsion is minimized + attraction is maxmized ..

舊out-c 野, 都幾好, 我個人認為, 有d 招式係幾好用for CE
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