Aluminum Chloride naming in today's review

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Megan Singer 3D
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Aluminum Chloride naming in today's review

Postby Megan Singer 3D » Fri Dec 11, 2020 4:24 pm

Since Aluminum Chloride is a molecular compound, why wouldn't we name it Aluminum trichloride as following the naming rules for molecular compounds? Can all molecular compounds be named without the prefixes for each element?

Ryan Laureano 3I
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Re: Aluminum Chloride naming in today's review

Postby Ryan Laureano 3I » Fri Dec 11, 2020 5:08 pm

I'm pretty sure the prefixes are used to specify the number of atoms. Without the prefixes, the name would just refer to the elements within the compound.

Rose_Malki_3G
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Re: Aluminum Chloride naming in today's review

Postby Rose_Malki_3G » Fri Dec 11, 2020 6:09 pm

Because this bond is ionic, you do not use prefixes in naming it

Eliot Kagan 2G
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Re: Aluminum Chloride naming in today's review

Postby Eliot Kagan 2G » Fri Dec 11, 2020 10:11 pm

Since it is an ionic compound, we don't use the prefixes because we can find out the number by checking their respective charges. We use prefixes in covalent bonds because the number of atoms in the molecule is more ambiguous.

Megan Singer 3D
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Re: Aluminum Chloride naming in today's review

Postby Megan Singer 3D » Sat Dec 12, 2020 2:31 am

From what I've seen online Aluminium chloride is actually polar covalent because of the high polarizing power of Al3+. However, I think because Al always has an oxidation state of 3+, it's implied that there are 3 chlorines.


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