1.Identify the type of isomer (structural, geometric, or optical) each of the following pairs represents.

A. CHBrClF and CHBrFCl
B. n-butane and 2-methylpropane
C. trans-2-pentene and cis-2-pentene

For A I think it would be Geometric
For B I think it would be Optional
And for C I think it would also be Optional

2 answers

Go to the blackboard and write 50 times OPTICAL, this assignment is not OPTIONAL.

B I disagree, C is the O word your are supposed to be writing at the blackboard.
None are right.
Go to Google and type in three separate times as
optical isomers, structural isomer, geometric isomer