# How do polar covalent bonds form?

But in a polar covalent bond, the more electronegative atom polarizes electron density towards itself to give partial electronic charges on the participating atoms...i.e. H_3stackrel(""^+delta)C-stackrel(delta^-)Cl....hydrogen bonding represents an extreme example of polar covalent bonding, and occurs when hydrogen is directly bound to $F , O , N$...