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VCE Stuff => VCE Science => VCE Mathematics/Science/Technology => VCE Subjects + Help => VCE Chemistry => Topic started by: physics on May 05, 2009, 08:03:56 pm

Title: Anyone know an easy way to remember polyatomic ions?
Post by: physics on May 05, 2009, 08:03:56 pm
YEh... the subject says it all...
i can;t seem to remebr the polyatomic ions even if i read it multiple timess.
like nitrate
nitrite
sulfate
sulfite
and all of them.

 :uglystupid2: :idiot2: its really hard :(
Title: Re: Anyone know an easy way to remember polyatomic ions?
Post by: TrueTears on May 05, 2009, 08:05:21 pm
Just get familiar with them and start memorising them, soon you will be able to remember each of them.
Title: Re: Anyone know an easy way to remember polyatomic ions?
Post by: mano91 on May 06, 2009, 02:55:52 pm
nitrate    ate is a 3 letter word.  No 3-        SORRY ABOUT ION NOTATION
nitrite     there are 2 i's in nitrite No 2-
nitride     tri means 3.               N3-
sulfate    fate is a 4 letter word   SO 4 2-
sulfite     fit is a 3 letter word      SO 3 2-
sulfide    just remember this one :P  S 2-

Title: Re: Anyone know an easy way to remember polyatomic ions?
Post by: physics on May 06, 2009, 04:36:58 pm
Quote from: mano91 on May 06, 2009, 02:55:52 pm
nitrate    ate is a 3 letter word.  No 3-        SORRY ABOUT ION NOTATION
nitrite     there are 2 i's in nitrite No 2-
nitride     tri means 3.               N3-
sulfate    fate is a 4 letter word   SO 4 2-
sulfite     fit is a 3 letter word      SO 3 2-
sulfide    just remember this one :P  S 2-




LOL THANKS HEAPS :)
Title: Re: Anyone know an easy way to remember polyatomic ions?
Post by: Mao on May 06, 2009, 06:48:35 pm
Just a small thing, you most probably won't be required to know nitrite, nitride, sulfite, sulfide (or or things of that like), some university students still get confused..

Here's a few essentials:

Nitrate, sulfate, phosphate, permanganate, dichromate

and as a general rule, the suffix 'ide' indicate monatomic ion (atom gaining/losing electrons to have a full valence shell). and where an element have different oxyanoins (anions involving oxygen), the 'ate' will have more oxygen than the 'ite'