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at 1:40 you mention why the most electronegative element is fluorine and not hydrogen, but I think you meant to say helium, but great video!
![Organic Chemistry: Eclipsed, Gauche, Anti [Staggered] Conformations of Newman Projections MADE EASY!](http://i.ytimg.com/vi/-fff3Ytm7U0/mqdefault.jpg)
at 1:40 you mention why the most electronegative element is fluorine and not hydrogen, but I think you meant to say helium, but great video!