Polar and NonPolar Molecules: How To Tell If a Molecule is Polar or Nonpolar
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- เผยแพร่เมื่อ 17 พ.ค. 2024
- This video provides a fast way for you to determine if a molecule is polar or nonpolar. It provides examples so you can quickly distinguish nonpolar molecules from those that are polar.
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Phosphorus pentachloride is non polar...while phosphorus Trichloride is polar molecule but you mistakenly spoken It is non polar..
Thumbs up if you have a test coming up.
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Got a final tomorrow
Finna have a test in 30 min
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There's also the SNAP method. He discussed it but just so you remember,
Symmetry = Non-polar
Asymmetry = Polar
Thank you dude! I am crashing chemistry at a higher level so this is all really new to me haha
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But wait,,, what about water?
Dion Advincula water polar because one side is more negative than another, the hydrogens want to give their electrons to oxygen due to its higher electronegativity. when something is polar it has a side that’s more negative than the others and because oxygen is more negative then the hydrogens it forms a point of negativity.
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I searched through tons of videos to find something explaining if how a molecule was polar or non polar, this video was the last one I needed because it helped so much, due to the fact that it was quick and showed easy ways to find its polarity. THANK YOU & keep up the good work
No Problem
The Organic Chemistry Tutor why is BF3 non-polar and NF3 is polar?
B doesnt have 8 electrons around it its an exception(it only needs 6 electrons) , i think the rest of the elements needs 8 electrons. therefor it DOESNT have the lone pair to form a trigonal pyramidal,it will form a trigonal planer . N needs 8 so therefore i will have a lone pair of electrons which WILL form a trigonal pyramidal
hanna issa BF3 is a trigonal planar (2Dim.) molecule with no unbonded pairs of electrons. In NH3 the N atom has sp3 hybridization, making it a 3Dim. tetrahedron. Tetrahedral atoms have, potentially, up to four bonding locations. In NH3, three of those locations on the nitrogen are occupied by hydrogen atoms. The fourth location is occupied by a pair of unbonded electrons. The unbonded pair tends to push the other bonded pairs away. The unbonded pair has a very strong negative aspect, whereas the negative aspect of the other three bonded pairs are "diluted" by the more positive hydrogen atoms to which they are connected. Therefore, the end of the NH3 molecule with the unbonded pair will be more negative than the opposite end. This makes the molecule polar.
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You can also use Electronegativity Ranges
Nonpolar Covalent = 0 - 0.5
Polar Covalent = 0.5 - 1.7
Ionic = 1.7 - higher
Ionic bonds considered polar or non-polar?
@@simmy4619 if i'm not mistaken, polar and non-polar are just for covalent, so ionic bond is neither of them.. ionic is charged while polar and non-polar are partially charged ( that's why it is delta + or delta - ).. correct me if i'm wrong
@@heyheyheyhey376 ahh that makes sense. I think you’re right. So if the EN difference is equal to or greater than 1.7, it’s not sharing electrons, rather using the give and take method
Polar and non polar bonds do not equate to polar and non polar molecules. Polar bonds can be a polar or a non polar molecules, whereas non polar bonds is only non polar molecules.
@@heyheyheyhey376 But how can I calculate for Ethanol? I know Ethanol is non-polar.....but how should I calculate this like other covalent bonds by electronegativity?
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I didn't understand what my teacher is discussing about polar and nonpolar until I found this video and now I was able to understand polar and nonpolar. Thanks to this man, a lot.
yeah? really? what does it actually mean polar vs non-polar. why do we even care? why did chemists ever care to distinguish molecules based on this criteria? does not explain this at all. probably helped you pass some exam and just forget about it all. mechanical teaching and learning at its best!
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this video is really helpful especially for those who had difficult time identifying polar from non pola molecules and v.v. Keep up the amazing job!
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This is the best video that explains the difference between Polar and Non polar. I'm enlightened! ❤️
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Thanku .... It was really helpful ... earlier I was unable to distinguish between these two bt now it proved really beneficial for me ... Again thanku so much
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could you make a video explaining what polar and non-polar exactly means I know in your video you explain how to identify it but it would be nice if you explained what all of it means thanks
If your main atom (like C in CH4) has got disconnected electron pairs your molecule is Polar because the distribution of electron charge on its molecule is not the same
And if the atoms around your main atom are different then your molecule is also polar
Just in case if you need it guys!
Don't forget to draw the Lewis Structure 😉
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When you say that the molecule is symmetrical it is non-polar, how so? Because something like CF4 would have a tetrahedral shape which contains 2 bonds in the same plane, 1 going out of the page and 1 going into the page so it wouldn't be symmetrical. Please can you clarify what you mean by symmetrical? Thanks
he means symmetrical as in the outside chemicles ares identicle
tetrahedral is a symmetrical shape as if you cut a tetrahedron from any point passing through its axis you will get a congruent part of it , now talking about polarity : the vector sum of three bonds is equal and opposite to the 4th bond thus it is non -polar
I have the same question. Help.
He didnt draw CF4 right. F downwards is supposed to be a bit to the left
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Bro i feel like everything is opposite in chemistry. Like Symmetry = nonpolar, wouldn’t it “make sense” for symmetry to be polar? Idk I know it’s how it goes, but sh”t like that hurts my brain and i get knots bro
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How to calculate the electronegativity because its usually not mentioned in the question.
Anything above or to the right of an atom on the periodic table has higher electronegativity.
e.g. Li has higher electronegativity (1.0) than Cs (0.8), because it's 4 periods higher.
C has higher electronegativity (2.6) than Li (1.0) because it's to the right of Li.
Also, you can check this on most periodic tables.
+Preston Garvey I see.. tysm
How do you get these specific numbers, though? the (1.0), (0.8), (2.6), etc...
You'll have to look at a periodic table for that. But you can make general estimates for some of them.
use a data book of values
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And I used to think that as long as hydrogen is present, the compound is polar. 🙏thank you so much. You just saved my cgpa this semester