We?ll see that organic molecules can be classified according to the functional groups they contain, where a functional group is a collection of atoms with a characteristics chemical reactivity. Use the electro negativity values given in Figure to predict the direction of polarization of the following functional groups.

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(a) (b) (c) (d) -CEN NH2 HO Ketone Alcohol Amide Nitrile н Не 2.1 Li Be в Ne 3.0 3.5 Si 1.0 1.6 2.0 2.5 4.0 Na Mg 1.2 AI CI Ar 1.8 2.1 3.0 0.9 1.5 2.5 Sc Ti V Cr Mn Fe Co 1.6 1.3 Zn Ga 1.6 Ca Ni Cu Ge Se Br As 2.0 Kr 0.8 1.0 1.5 1.6 1.5 1.8 1.9 1.9 1.9 1.6 1.8 2.4 2.8 Pd Ag | Cd In Rb 0.8 Sr Zr Nb Mo 1.8 Tc Ru Rh 2.2 2.2 Sn Sb 1.9 Te Xe 1.0 1.2 1.4 1.6 1.9 2.2 1.9 1.7 1.7 1.8 2.1 2.5 Au Hg Cs La Re Os Ir 2.2 2.2 2.2 Pb Ba 0.9 Hf 1.3 Ta 1.5 Pt TI 1.9 1.8 Bi 1.9 Po 2.0 At 2.1 Rn 0.7 1.0 1.7 1.9 2.4 1.9