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secondary 3 | Biology
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qaz
Qaz

secondary 3 chevron_right Biology chevron_right Singapore

chemistry; hi i keep getting C as my answer but it's D

Date Posted: 4 days ago
Views: 9
J
J
4 days ago
Option C means your compound is AlF3.
Option D means your compound is PCl3.

PCl3 has a simple molecular structure, and exists as a gas at room temperature.

The bonding in AlF3 is ionic and it exists as a solid at room temperature.
qaz
Qaz
4 days ago
hi sorry but if Q gains an electron (2.7) , the overall charge will be a - , so doesn't it means that P has to be positive in order for them to be a compound ? so P has to lose electrons (2.8.3) lose 3e to become 3+ charge ? thanks ! :)
J
J
4 days ago
By saying that, you're assuming the bonding in the compound is ionic. The bonding in PCl3 is covalent. It has a simple covalent/molecular structure. P here means Phosphorus by the way.
qaz
Qaz
4 days ago
oh sorry i guess i had a misconception that all compounds will have 0 overall charge , be it ionic or covalent compounds
J
J
4 days ago
Whether covalent or ionic, the compound's overall charge depends on the elements inside. The charge is displayed in the formula.


For example, the carbonate ion (CO3 ²-)

The bonding is covalent but there's an overall charge of 2-


Water (H2O) :

The bonding is covalent but the overall charge is 0.

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LIONEL LIM
Lionel Lim's answer
112 answers (Tutor Details)
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I can only think of this. Good luck!