Naming Compounds

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Ethan McCarthy 1F
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Joined: Wed Feb 27, 2019 12:17 am

Naming Compounds

Postby Ethan McCarthy 1F » Sun Jun 30, 2019 2:22 pm

Does anyone know of ways/mnemonics to remember the formula associated with polyatomic anions (especially oxoanions)? Table D.1 on page F30 of the seventh ed. textbook has many examples of the names of anions and the formula, so I'm wondering if it's best for me to memorize the table or if there's a method to the oxoanion nomenclature that I'm missing.

Posts: 34
Joined: Mon Jun 17, 2019 7:23 am

Re: Naming Compounds

Postby somyapanchal1D » Sun Jun 30, 2019 2:33 pm

I'm pretty sure we don't need to know how to name compounds, especially some of the anions shown on the table. But, I would just know the basics. For example, I would know the main diatomic gases which are oxygen, nitrogen, hydrogen and chlorine gas (and others). All of these gases contain two atoms, so they are written as O2, H2, N2 and Cl2, etc. Also, I would know the molecular formula for carbon dioxide (CO2) and water (H2O). Other than that, I'm pretty sure we will be given the molecular formulas.

But, if you would like to memorize a few of them, I found this mnemonic online:

Nick the Camel ate a Clam Supper in Pheonix with an Ale.
Nick - N with 3 consonants and 1 vowel therefore NO3-1
Camel - C with 3 consonants and 2 vowels, therefore CO3-2
Clam - Cl with 3 consonants and 2 vowels, therefore ClO3-1
Supper - S with 4 consonants and 2 vowels, therefore SO4-2
Pheonix - P with 4 consonants and 3 vowels, therefore PO4-3
Ale - Al with 2 consonants and 1 vowel, therefore AlO2-1

Here is the link as well: ... onics.html
Hope this helps!

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