Question

How can we describe priority to an atom in a Z or E isomer?

• A. atom which has higher atomic number
• B. atom which has higher valency
• C. atom which has lower atomic number
• D. atom which has lower valency

Answer 1

The correct option is A atom which has higher atomic number

Atom which has higher atomic number is given priority in case of E and Z isomers.

Hence the correct option is A.