Ethene

The carbon atoms C C

H H H H C C The hydrogen atoms

H H H H C C The bonds between atoms are drawn as lines. These are  bonds:

H H H H C C and this is a  bond, both above and below the plane of the atoms:

H H H H C C 

H H H H C C     

H H H H C C       

H H H H C C         bonds are  arallel  bonds in  traight lines between atoms

H H H H C C         bonds are exposed… Bonds are regions of high electron density

H H H H C C         bonds are exposed and therefore are more vulnerable to attack… Bonds are regions of high electron density

H H H H C C         bonds are exposed and are therefore more vulnerable to attack by electrophiles Bonds are regions of high electron density

H H H H C C        Back to the beginning

References Original photograph and PowerPoint slides by Mike Thompson of Truro School www. chem - pics .co. uk Adapted by Steve Lewis for the RSC