Electronegativity | Atomic structure and properties | AP Chemistry | Khan Academy

Electronegativity is a measure of an atom's ability to attract shared electrons to itself. On the periodic table, electronegativity generally increases as you move from left to right across a period and decreases as you move down a group. As a result, the most electronegative elements are found on the top right of the periodic table, while the least electronegative elements are found on the bottom left.

Khan Academy is a nonprofit organization with the mission of providing a free, world-class education for anyone, anywhere. We offer quizzes, questions, instructional videos, and articles on a range of academic subjects, including math, biology, chemistry, physics, history, economics, finance, grammar, preschool learning, and more. We provide teachers with tools and data so they can help their students develop the skills, habits, and mindsets for success in school and beyond. Khan Academy has been translated into dozens of languages, and 15 million people around the globe learn on Khan Academy every month. As a 501(c)(3) nonprofit organization, we would love your help!

[vedant]

when you learn more in a 10 min vid than a whole semester worth of work

[hahahitskelsey]

This video helped so much. My teacher sucked at explaining it! Thanks dude!

[hongkongsmartboy]

Electronegativity (Withdraw a electron in Molecular state): F > O > N > Cl
Electron Affinity (Withdraw a electron in Atomic state): Cl > F > Br > I

[fiqo]

Thanks i missed some classes and suddenly i didnt know ehat was going on this realy helped and made it easy to understand

[MasterZiomekPL]

Would you like a job in Ireland?
My boring Chemistry teacher would love to be anywhere else.

[daHorseLovr]

Because noble gases are just happy! haha!
Thanks this helps a lot for AP Chem! 

[chissstardestroyer]

Well, about the periodic table: you would be getting more electronegative as you go towards your right while looking at the table facing properly; with the exception of the noble gases: those guys are perfectly balanced about electrons and protons as a rule.

[schizophrenicarguing]

This video couldn't have been any better. Thanks!

[BOGObiology]

WHERE WAS THIS WHEN I WAS AN UNDERGRAD?!?

[kgamesekoto]

You are the best. Thank you very much. May the good Lord Bless you 🙏

[wajihasaif]

I never understood the group trends but now I do thanks to you

[lizg]

Thank you, this video was very helpful :)

[amrobay]

this Video is one of the best videos i EVER seen among all scientific disciplines , WOOOOW

[tanishkulkarni]

thank you sir for such a goof explanation
straight and easy to understand than textbooks!

[anonymousliar]

thanks im currently revising chemistry and came across the definition of electronegativity but didnt understand it but i have now thanks to this video big thumbs up 👌

[firstnamelastname]

3:47 "electrons are in this kind of blur [...]" i.e., Heisenberg's Uncertainty Principle and the probability cloud of where they can be found at any given moment. The probability cloud can be calculated as a wave form with the de Broglie wavelength, I think?

Great video, thank you!

[chissstardestroyer]

So, Mr. Khan; astronomy *is* in fact a good and functional lens for atomic chemistry in that the further away an electron is from its nucleus the more likely it is to be snatched away, whereas this is similar to planets and stars- but it is a *very* limited analogy.

[tamaraterherst]

How do you know the value of the electronegativity?? So you can know if a molecule is polar or no polar

[NurseShelly]

Thank you so much! Your videos are always super helpful!

[clairenime]

this helped. Now I understand why that is more electronegative going up.