Question: Which of the following statements about stereoisomers is true?

Options:

1. They have the same molecular formula.
2. They have different connectivity of atoms.
3. They cannot be interconverted without breaking bonds.
4. They have different physical properties.

Correct Answer: They cannot be interconverted without breaking bonds.

Solution:

Stereoisomers have the same connectivity but differ in the spatial arrangement of atoms, and they cannot be interconverted without breaking bonds.