Polar bonds in organic chemistry

Some examples of polar bonds in organic chemistry are:

Bond Polarity Reactivity
C-Li 1.5 Lithium, as a metal, is highly electropositive, resulting in the C-Li bond being polarized towards carbon. This makes the carbon atom nucleophilic, and alkaline.
O-H 1.4 The bond is polarized towards the highly electronegative oxygen atom, resulting in the hydrogen atom being acidic.
C-O 1.0 The bond is polarized towards the highly electronegative oxygen atom, resulting in the carbon atom being electrophilic.
N-H 0.9 The bond is polarized towards the more electronegative nitrogen atom. The reactivity is dominated by the nitrogen atom being nucleophilic.
C-Cl 0.5 The bond is polarized towards the more electronegative chlorine atom. Furthermore, Cl- is a good leaving group. This makes the C atom electrophilic.
C-N 0.5 The bond is polarized towards the more electronegative nitrogen atom. Nitrogen is a good nucleophile.

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