Which type of isomerism involves the same molecular formula but different structural arrangements?
A
Optical isomerism
B
Conformational isomerism
C
Structural isomerism
D
Geometric isomerism
Correct Answer: Option C — Structural isomerism
Explanation:
Structural isomerism occurs when compounds share the same molecular formula but differ in the connectivity or arrangement of atoms, including chain, position, and functional group isomerism as its main subtypes.