CHEMISTRY - 唔該幫我睇下我答得0岩唔0岩 thanks

👨🏻‍🏫 學術台化學

[匿名]

2006-10-30 2:13 pm

Predict the formula of the covalent compound formed between the following pair of elements.

1. Si and Cl

2. C and O

3. F and O

4. N and H

My answers:
1. SiCl(4)
2. C(2)O(4)
3. FO
4. NH(3)

括號內既係subscript

更新1:

TO: 樓下兩位... 點解第2 係CO2 既? thanks

回答 (3)

用戶87357

2006-10-31 1:00 am

✔ 最佳答案

1) Si(2,8,4) , Cl(2,8,7)
Si 4+ * Cl 1-
SiCl4
2)C(2,4), O(2,6) [Covalent Bond]
C 4+ * O 2-
C2O4
=C02 (Cancel factor 2)
3)F(2,7) , O(2,6)
F- * O 2-
F2O
4)N(2,5),H(1)
N 3- * H1-
NH3

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用戶75651

2006-10-30 6:49 pm

第一個真係唔知
第二個CO2
第三個F2O
第四個NH3

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Hungkit

2006-10-30 2:36 pm

第一個ok
第二個應該係CO(2)
第三個好似係F(2)O 不過唔sure
第四個ok

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