How to Memorize The Polyatomic Ions - Formulas, Charges, Naming - Chemistry

This chemistry video tutorial explains how to memorize the polyatomic ions. It provides the name of the common polyatomic ions, the charges and their respective formulas as well. Common polyatomic ions include sulfate, nitrate, acetate, ammonium, hydroxide, sulfite, cyanide, phosphate, disulfide, bicarbonate, hydrogen sulfate, bisulfite, chromate, dichromate, pyrophosphate, permanganate, thiosulfate, peroxide, superoxide, oxalate, borate, iodate, perchlorate, hypochlorite, bromite, and nitrite just to name a few. This video contains plenty of examples and practice problems including a quiz that tests you to see if you remember the common polyatomic ions.
Chemistry - Basic Introduction:
• Chemistry
Unit Conversion Problems:
• Converting Units With ...
Physical Vs Chemical Properties:
• Physical vs Chemical P...
Elements, Atoms, & Molecules:
• Elements, Atoms, Molec...
Protons, Neutrons, & Electrons:
• How To Calculate The N...
Average Atomic Mass:
• How To Calculate The A...
___________________________________
Ionic and Covalent Bonding:
• Ionic and Covalent Bon...
Naming Molecular Compounds:
• How To Name Covalent M...
Memorize The Polyatomic Ions:
• How to Memorize The Po...
Writing Formulas - Molecular Compounds:
• Writing Chemical Formu...
Naming Ionic Compounds:
• How To Name Ionic Comp...
_____________________________________
Naming Transition Metal Compounds:
• How To Name Ionic Comp...
Writing Formulas - Ionic Compounds:
• Writing Chemical Formu...
Writing Formulas - Polyatomic Ions:
• How To Write Ionic For...
Naming Acids In Chemistry:
• Naming Acids In Chemistry
Introduction to Moles:
• Introduction to Moles
_____________________________________
Final Exams and Video Playlists:
www.video-tuto...
Full-Length Videos and Worksheets:
/ collections
Polyatomic Ions Formula Sheet:
bit.ly/4e9F2YT

[@TheOrganicChemistryTutor]

Polyatomic Ions Formula Sheet: bit.ly/4e9F2YT Final Exams and Video Playlists: www.video-tutor.net/ Full-Length Videos & Worksheets: www.patreon.com/MathScienceTutor/collections

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STEM students*

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I am having such a hard time with my chemistry class and it's really affecting my self-esteem. I watched this video a couple months ago and you were right. "might as well learn them now". I spent most of the night watching this and making flash cards and when you did the quiz questions. I got 85% or so right and I got teary-eyed. Thank you for making this video and giving me hope. Bless you.

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not true we're forced to memorize all of them ?

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"-ate" has one more oxygen than "-ite" and monoatomics end in "-ide" --- brilliant

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You sound like the doctor

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@@aurelizhernandez8166 you look at the charges for each element by their group number

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Some polyatomics end with ide too Such as cyanide and peroxide

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This video was incredibly useful! I have been trying to memorize these for 2 weeks because my teacher gave us a list and said, "Know these". Because you put logic to the names I can now remember the patterns. THANK YOU!

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3 weeks later for me. Guess we're all screwed

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I am having a quiz tomorrow together with my mid year exam...I am so screwed cuz I just can't memorise but this guy saved me

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I'm only like a minute into the video, but thank you. I really needed a breakdown of all this. My brain is too analytical to just be told to "memorize this".

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in the process of memorizing them you will automatically analyze it in your brain and slowly know how it came to be

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I’m only in middle school and I gotta learn 25 of these lol

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I have to memorize them (i think 99% people here are doing the same thing), but i can't since i couldn’t find any correlation among them. You helped me alot! Now, i dont think i have to memorize them anymore. I already know the formula, and i've been memorizing while watching your video. Nice work! thank you :)

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Hey! Just saying! You might actually want to improve your aptitude skills if you were not able to actually find this pattern on your own. I know close to nothing about chemistry and the minute he taught us a couple sets, i was immediately able to tell the pattern here. I thought it was obvious but seeing so many people telling it was brilliant that he gave them this pattern seemed weird to me. So just pointing out!

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[@maxpercer7119]

For the pattern seeking minded, we have a rule of thumb. Let A stand for some nonmetal, I will use 1- charge for the overall charge of the ion or polyatomic ions for illustrative purpose; we could use others such as 2-, 3- , etc. The labeling scheme is: A - , AO - , AO2 - , AO3 - , AO4 - Names: A-ide, hypo-A-ite, A-ite, A-ate, per-A-ate Note that there are exceptions to this scheme, for instance in the Nitrogen category N has a 3- charge but Nitrite and Nitrate have 1- charge. Chlorine and Bromine behave well according to this scheme. Also note that per is short for hyper, to indicate more oxygen atoms, 'hypo' means under or less. When you are 'hyper' you have too much energy. Also a useful tip, to remember -ate ending has more oxygen than -ite ending, 'ate' sounds like after you ate (paste tense) when you have more food, so you will have more oxygen than ite.

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17:19 is the quiz just leaving this here for myself

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“NO3, NO2 and N3 do you know the names of these three ions?” Me: No

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NO3=Nitrate NO2= Nitrite N3= Nitride.

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Video covers on why few prefixes and suffixes are used, what polyatomic ions are supposed to be committed to memory, exceptions. Love you Julio, keep up the great work!

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I don’t know why, but just going through explaining these really helps the memorization, thanks a lot👍

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4:16 can you please explain why ClO3- is chlorate,not ClO4-,for phosphate it's (PO4)3- and sulphate (SO4)2-

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[@michelleyim569]

did you figure it out? kinda confused abt that rn

[@skywalker778]

@@michelleyim569 pattern from right to left of the table -1 -2 -3 then again -1 -2 -3

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@@skywalker778 Could you elaborate on how the -1,-2,-3 on the periodic table explain why some polyatomic ions are -ate at O4 and O3

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this is definitely super helpful, especially compared to how my current teacher went over it way too fast and overexplained it. What I still want to know is how and why the charges are what they are. I get the concept of like monoatomic ions wanting to have 8 electrons in their valence shell, but then am not sure how it works with polyatomic ions.

[@maxjansson3672]

2 even number atoms = -2 charge 2 uneven number atoms = +1 charge 1 even and 1 uneven = -1 charge except for the phosphate groups which have a -3 charge If the are more atoms in the molecule for example HPO3 you just add or subtract the charge of the added atom in this case a +1 for the hydrogen so HPO3 is -2 charged.

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Amazing Sir, Earlier I was very confused about the nomenclature of poly atomic ions but after watching this video lecture I had got to understand every concept of nomenclature THANKZZZZZZ...........................

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Good review of the polyatomics and nice in-video practice is great. Do you find that there are techniques to remember which polyatomics have which charges and number of oxygens or do you just power through and memorize them?

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How do you determine the charge after the Oxygen symbol? How do you know if it is 2- or 3- or just 1-

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oxygen is always -2

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So if you know the oxidation state (aka charge), you can figure out if it’s 1-, 2-, or 3-. Oxygen’s oxidation state is 2, so it would be 2-

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@@MeganMarieT Well, why is Sulfate SO4(3-)?

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Why does every chem teacher just print out a list of 50-100 ions and say "test in a week" Just... Save us hours of work and spend 5 mins explaining the basic patterns. ffs. Thank you.

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this was the best way to learn polyatomic ions

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sat back down at 12:00

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