E-Z Isomerism(Geometric)

• E/Z isomerism:

  
  

  Have the same structural formula and the same molecular formula but different spacial arrangements of the bonds
• CIG Priority rules:

  1. Assign a priority to the two atoms bonded directly to each side of the double bond
  2. The Atom with Higher atomic number is given higher priority
  3. If the atoms are the same then you look at the next atom in the group to assign a higher priority too.
• If 2 highest atoms are either above or below double bond then it is the Z isomer if they are across the double bond they are the E isomer