CHEM 2OA3 Lecture Notes - Sigma Bond, Pi Bond, Electronegativity

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P orbitals in sp hybridized are reserved for sigma bonds, so electron pairs would go to sp orbitals. When drawing something that has a p orbital, want to draw it so that the p orbital is in the plane of the page, then draw the other stuff. Angle between hybrid orbitals and p orbitals are always 90 . Can exceed octet on 3rd row and lower, but not with 1st or 2nd rows. Longer arrow vs. smaller arrow tells us whether forward or backwards reaction is faster (and thus which side equilibrium lies on) Equilibrium constant: < 1, lies to the left, = 1, lies in the middle, > 1, lies to the right. Want bigger k value so we have more negative so that reaction goes more to completion so we minimize waste (negative means spontaneous) Higher energy of activation = slower reaction.

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