1,2-ethanediol into 1,2 ethenediol (HOCHCHOH) by removing one hydrogen atom from each carbon atom and replacing with a double bond between the carbon atoms. Be sure to add the second rod to represent the double bond. Draw a Lewis structure for 1,2-ethenediol. A. Identify the electron-pair and molecular geometry around each carbon and oxygen atom. B. What are the bond angles for H-C-C? For C-C-O? For C-O-H? C. Draw two different structures of the molecule in which the –OH group on the two carbon atoms occupy different orientations with respect to each other.

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Alkanes and Cycloalkanes

Alkanes are saturated organic compounds which are made up of C and H atoms. Alkanes have the general formula of CnH2n+2. Alkane contains sp3 hybridized carbon atoms with four sigmas (σ) bonds & every hydrogen atom is connected with one of the carbon atoms. The size of the alkane could be determined by the number of carbon atoms located in it.