The isomers butane and methylpropane have(1) the same molecular formula and the same properties
(2) the same molecular formula and different properties
(3) a different molecular formula and the same properties
(4) a different molecular formula and different properties
The correct answer is option 2. Butane and methylpropane have the exact same formula which is C4H10. However, their structure differs which gives them different properties. Butane has a linear structure while the latter has a T-like structure.
