In addition to what you said, I can also say that a fast way to remember it is SNAP (Symmetrical Nonpolar, Asymmetrical Polar). Thank you for the video, it really helps :)
@thatg98y6 Thanks for your input. The way I first learned it was "polar=asymmetrical, nonpolar=symmetrical". While that was easy to swallow, it's kind of a canned decree that lacks scientific principles. The most accurate, but still fairly concise way to explain it, in my opinion, would be "nonpolar molecules have no net molecular dipole, while polar molecules do have a net molecular dipole."
Just because Boron is further to the right on the periodic table doesnt necessarily mean it is more electronegative. That is only a general trend. You have to refer to an Electronegativity chart, such as one in a chemistry book or online. The one in my Gen Chem book reads that Hydrogen has an electronegativity of 2.1, while boron's is 2.0.
what i want to know is how do you add them up to know if you do get a dipote. very helpful but what if you dont get these common structures on a exam how would you know if it is popar or non ?
great explanation! it made me understand easier. but, i have one request, i am looking forward to if you could explain why is the netdipolemoment of three equal angles at 12:38 (the three 120degree's) is zero? thanks in advance!
Yh I think you should explain it in the simplest way possilbe because I dont even know what polar is or polarized is so just at that point I had no idea what was going on, but still GREAT VIDEO!
@8:42 shouldn't the arrows point on the opposite direction? Because B has more electronegativity than H. If not, then how do you know that H has more electrongegativity than B? Thanks a lot :)
Looking at your example for water.... You drew it so that the molecule is bent. What if I didn't know to draw it that way? What if I drew it so that looks linear? How would I know whether or not water was polar? What made you decide to draw bent like that?
Understanding VSEPR would be a prerequisite to learning this. Using Lewis structures would be bad because they can give you the wrong answer. They don't show the three dimensional structure that you need to figure out if the molecule is polar or not. There are other videos around here to explain VSEPR theory.
The video was really helpful but you went wrong in vectors. The vector b should be taken as negative as it is in the opposite direction.As then they both cancel out.
good stuff, but when you're explaining something always assume that the person you're teaching doesn't know jack about the subject. how are going to explain polarity using the VSPER models and it's like you have them by heart. it's better if you were to use the the lewis structure, because the VSPER model itself requires some nogging to figure out
If non-polar is symmetrical then why is trigonal planar make it non-polar since the arrow is not pointing on the opposite direction. Explain it clearly it doesn't make me satisfied
Hydrogen is odd to begin with... since hydrogen can accept an electron to have a -1 in charge (where boron cannot have a negative charge) The electronegative value for hydrogen is 2.1 where boron is 2.0.
In addition to what you said, I can also say that a fast way to remember it is SNAP (Symmetrical Nonpolar, Asymmetrical Polar). Thank you for the video, it really helps :)
i just wanna let u know Ben that u really helped me understand chemistry a lot and i thank u very much for it
@thatg98y6 Thanks for your input. The way I first learned it was "polar=asymmetrical, nonpolar=symmetrical". While that was easy to swallow, it's kind of a canned decree that lacks scientific principles. The most accurate, but still fairly concise way to explain it, in my opinion, would be "nonpolar molecules have no net molecular dipole, while polar molecules do have a net molecular dipole."
Oh really? didn't know that. But I was confused thanks a lot brother. Thanks for making these videos. They mean a lot mate!
Awesome explanation; will be referring back to your videos in my studies before exams. Subscribed!
Thank you Ben! These videos are beyond helpful!
Good video. The quality of the footage could be enhanced by adding an additional lamp to your set. Better lighting=better video
Thank you so much! You are helping me get through Chem 2!
Thanks a lot... Your videos are always very helpful...
Just because Boron is further to the right on the periodic table doesnt necessarily mean it is more electronegative. That is only a general trend. You have to refer to an Electronegativity chart, such as one in a chemistry book or online. The one in my Gen Chem book reads that Hydrogen has an electronegativity of 2.1, while boron's is 2.0.
Thanks it was very helpful. Good to know for my test today.
what about t- shaped, see saw and square pyramidal ? can you do some examples on those ?
what i want to know is how do you add them up to know if you do get a dipote.
very helpful but what if you dont get these common structures on a exam how would you know if it is popar or non ?
This was SO helpful! THANK YOU!!! :)
Very helpful! Thank you
great explanation! it made me understand easier. but, i have one request, i am looking forward to if you could explain why is the netdipolemoment of three equal angles at 12:38 (the three 120degree's) is zero? thanks in advance!
+Far Ai correction: at 8:00 not 12:38 sorry
Thanks for the help this was very helpful for the upcoming exam im taking GOOD JOB!
Yh I think you should explain it in the simplest way possilbe because I dont even know what polar is or polarized is so just at that point I had no idea what was going on, but still GREAT VIDEO!
it is very helpful. Thank you so much.
@8:42 shouldn't the arrows point on the opposite direction? Because B has more electronegativity than H.
If not, then how do you know that H has more electrongegativity than B? Thanks a lot :)
This does help! thanks!
Thanks man! I appreciate it
Looking at your example for water.... You drew it so that the molecule is bent. What if I didn't know to draw it that way? What if I drew it so that looks linear? How would I know whether or not water was polar? What made you decide to draw bent like that?
+droppinabigdeuce The lone pairs on the oxygen force the hydrogens to move towards each other, making it bent.
droppinabigdeuce it is due to lone pair--- lone pair repulsions ..!!
Thanks a lot, it is very useful
Understanding VSEPR would be a prerequisite to learning this. Using Lewis structures would be bad because they can give you the wrong answer. They don't show the three dimensional structure that you need to figure out if the molecule is polar or not. There are other videos around here to explain VSEPR theory.
If the molecule is symmetrical then it's non polar? And if it's asymmetrical then it's polar?
+Karen Roman In most cases.
wow how did you know i needed just this?
I visualise it like this: the vectors are ropes. If a number of people would pull their rope, would the atom to which the ropes are connected move?
are all linear molecules non polar?
Is there a simple/quick way to identify whether or not a molecule is polar or non-polar without drawing a diagram?
+Liliana Teniente u can remember the shape and visualize it for simple molecules
Thanks so much!
depends on the direction of the vector arrows, if its going in opposite directions then its non polar
So if a molecule is asymmetrical, does that make it polar?
Yes. S.N.A.P. = symmetrical is nonpolar, asymmetrical is polar.
Docprepper thanks . It is a good way to remember
thank you amazing teaching
The video was really helpful but you went wrong in vectors. The vector b should be taken as negative as it is in the opposite direction.As then they both cancel out.
how is hydrogen more EN than B? B is more to the right than H on the per, table..
Thanks!
thanks bro!
good stuff, but when you're explaining something always assume that the person you're teaching doesn't know jack about the subject. how are going to explain polarity using the VSPER models and it's like you have them by heart. it's better if you were to use the the lewis structure, because the VSPER model itself requires some nogging to figure out
If non-polar is symmetrical then why is trigonal planar make it non-polar since the arrow is not pointing on the opposite direction. Explain it clearly it doesn't make me satisfied
@ChemAssistBeta at 8:50 Borane's strongest force is dipole dipole.
Hydrogen is odd to begin with... since hydrogen can accept an electron to have a -1 in charge (where boron cannot have a negative charge) The electronegative value for hydrogen is 2.1 where boron is 2.0.
Dipole moments. Vectors. Net M. I got this.
No. HCN is great example of a polar linear molecule.
thanks dude
i was told by my professor that co2 is polar which explains why it can dissolve in water.
thanks!
what ur sayin is a new rule that came out this year by the IUPAC!
thanks
Which of the following bonds is a non-polar covalent bond?
A :
P−H
B :
N−Te
C :
Sr−Ti
D :
Na−Cl
If there's 4 lines from the central atom it means non polar. Save it like this ☺
trigonal pyramidal is less than 109.5 just but it in case
Dude, this video needs to be short and sweet, you're just dragging everything and it is hard to understand what you're trying to explain.
I don't get it. :( I have failed as a student.
No you haven't, you just need the right person to explain it to you
pushettt it up so far , fuzzy way of expl
Nc assignment boy
yahhh
hey i dont like the sound you make with your mouth
it disgusting
lol
You kind of barely hear it though, just focus what he is so saying, you won't notice! :)
your prof made a mistake
to confusing!!!!
one tip. take the mic out of your mouth , I can hear you smacking your lips. its gross
+Patrick White Thanks for your feedback!
+Patrick White your name is exactly like my academic advisor name's xD
+Patrick White ey yo mr white! lets cook yo!