CaHbOcNdXe
C₅H₆Cl₂
NE=[(2a+2)-(b-d+e)]/2 = [(2*5+2)-(6+2)]/2 = (12-8)/2 = 4/2 = 2 leg. duble
C=C-C=C-C ClC=C-C=C-CCl C=C-C=C-C
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Cl Cl Cl Cl
C=C-C-C=C C=C-C-C=C ClC=C-C-C=CCl
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Cl Cl Cl Cl
Cl
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C=C-C-C=C
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Cl
1,2-diclorociclopentena
Cred ca sunt mai multi.. Mai cauta..
