Do all optical isomers have COOH and NH2 bonded to the central chiral carbon ?? (For the ocr a spec)
Optical isomers are any compound that contain a carbon centre with four different groups attached, the carbon is said to be chiral because there is no plane of symmetry. For example Butan-2-ol has optical isomers (enantiomers).
I'm by no means a marker/ have experience in A level specs but in the OCR A A level Chem spec it says:
"Learners may be tested on their ability to: • draw diferent forms of isomers • identify chiral centres from a 2-D or 3-D representation."
So it sounds like you could also be given a molecule and asked to find the chiral centre ie the carbon that has four different groups attached. I'll put the link below incase I'm not looking at the right specification.