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本帖最後由 Hinton 於 17-6-2010 12:10 編輯
1)
Atom is a particle who contains protons,neutrons and electrons.
An ion forms when an atom loses o ...
-終場ソ使者- 發表於 26-1-2010 23:24
covalent bond 同 atom 既definitions 要modify下
atom可以只有一粒proton ->proton(s) 加返括號係s度會好d 因為唔一定係plural
其次 有d atom係冇neutron eg.hydrogen (with the reference of its relative atomic mass:1)
covalent 事實上係可以由metal同non-metal form
只係你地syllabus冇咩強調...
eg.AlCl3
Al係類金屬 Cl係halogen
但兩者form出黎既 係covalent bond
(supplementary inf.
Al 要扔哂果3粒electrons 要用既energy好高 about +10000kjmol^-1)
不過呢d野係al野 但你地334應該會教中六野(見到你地有講dative)
所以d definitions 最好執好少少
到時畀markers捉字蝨就無謂~"~ |
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