writing chemical formula based on name

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Rachel Brown 3A
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Joined: Fri Sep 29, 2017 7:06 am

writing chemical formula based on name

Postby Rachel Brown 3A » Sun Nov 19, 2017 2:47 pm

How do you know what order the elements or compounds go when writing the chemical formula if you are given the full name? Example would be 17.31

AtreyiMitra2L
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Re: writing chemical formula based on name

Postby AtreyiMitra2L » Sun Nov 19, 2017 2:57 pm

When ordering them in the chemical formula, the cation goes first and then the anion. Within the coordination sphere, you put the metal ion first. What follows after should be in the alphabetical order that you would go by when normally just writing the full compound out.

Shanmitha Arun 1L
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Re: writing chemical formula based on name

Postby Shanmitha Arun 1L » Sun Nov 19, 2017 3:03 pm

First, there are two types of bonds: ionic and covalent. Based on the type of bond, chemical formulas are written differently. I put a link below that explains how to name the compounds in depth and would highly recommend watching it.

https://www.youtube.com/watch?v=mQpNjm7xB30

Jessica Jones 2B
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Re: writing chemical formula based on name

Postby Jessica Jones 2B » Sun Nov 19, 2017 3:04 pm

When writing the names, do we use the old name or the new IUPAC name convention?

Sabrina Fardeheb 2B
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Re: writing chemical formula based on name

Postby Sabrina Fardeheb 2B » Sun Nov 19, 2017 3:52 pm

If it is a LIGAND, then you put the ligand names in alphabetical order + transition mental cation + roman numeral (indicating the oxidation state/charge)

If it is an ANION, then anion name + -o ending + hydrate + -ate ending to the metal (if the complex has negative charge)

If there is a CATION and an ANION, then TM cation + anion

Other notes:
- use prefixes to tell the # of ligands (mono- , di- , tri- , ...

Let me know this helps or if I made a mistake! This is what I understood from the lecture notes.


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