Anions

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Emily Ng_4C
Posts: 65
Joined: Fri Sep 28, 2018 12:17 am

Anions

Postby Emily Ng_4C » Mon Dec 03, 2018 9:20 am

Do we end all names of anions with an -ate even if the overall charge or the anion is not negative?

Jerome Mercado 2J
Posts: 60
Joined: Tue Nov 28, 2017 3:02 am

Re: Anions

Postby Jerome Mercado 2J » Mon Dec 03, 2018 9:56 am

Anions should have negative charge; when it doesn't have a charge it may be bonded to a cation. You may still have to end with -ate unless it is at a lower oxidation state then -ite should be used. Anions of only a single atom should end in -ide. Some monoatomic ions also have -ide such as cyanide (CN-) and hydroxide (OH-).


E.g Na2CO3 - Sodium carbonate

Sydney Aurelio_Dis4B
Posts: 30
Joined: Fri Sep 28, 2018 12:28 am

Re: Anions

Postby Sydney Aurelio_Dis4B » Tue Dec 04, 2018 12:02 am

Also when naming coordinate compounds for Anions ending with -ite its Ligand name would end with an "-O" (ex Cl- -> Chloro) and if it ends with -ate its Ligand name would end with "-ato" (ex Nitrate-> Nitrato)

becca_vandyke_4b
Posts: 30
Joined: Fri Sep 28, 2018 12:29 am

Re: Anions

Postby becca_vandyke_4b » Tue Dec 04, 2018 12:28 pm

You can also use the -ate rule to name polyatomic ions. For example NO3- has a negative one charge so its nitrate whereas NO2- is nitrite because it has 2 oxygens verses 3.


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