F3 chem.!(Not homework)

👨🏻‍🏫 學術台 化學
2011-02-19 7:17 am
How to draw the ionic bond formed by Calcium(2,8,8,2) and Chlorine(2,8,7)?
What is the chemical formula?
__________
How to draw the ionic bond formed by Lithium (2,1)and sulphur(2,8,5)?
What is the chemical formula?
________________
更新1:

You can also teach me how to draw instead of uploading photos.

回答 (4)

2011-02-20 1:48 am
In Ca, there is 2 outmost-shell electrons
In Cl, there is 1 outmost-shell electron
Ca loses 2 electrons and 2 Cl receive 2 electrons from Ca.
So chemical formula: CaCl2

2011-02-19 17:49:19 補充：
why form 3 have to be taught ionic bonding...
it is supposed to learn in form 4 chem...
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2011-02-20 1:36 am
How to find the chemical formula?

2011-02-19 19:37:46 補充：
Thank you for 知識就是力量!
Just like Biology,almost school is taught Digestion in Form4,but I learnt it this year.Maybe my school is strange!
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2011-02-19 9:51 pm
It is lithium sulphide, not 'lithium sulphur'

2011-02-19 14:00:22 補充：
001 is wrong. Sulphur only requirs two electrons for attending the octet structure. It should carry a 2- charge.
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2011-02-19 7:52 am
ionic bond:[Ca]2+ 2[Cl]- 電荷寫上面
chemical formula:CaCl2

ionic bond:3[Li]+ [S]3-
chemical formula:Li3S
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收錄日期: 2021-04-25 17:04:09
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