Carbon and its Compounds — Science STD 10 — Question

1. The organic compounds having the same molecular formula but different structures are known as structural isomers.
2. The phenomenon of occurring two or more different organic compounds having the same molecular formula but different structures is called 'structural isomerism'.
3. No isomerism is possible in prqpane as it has only 3 carbon atoms, it is not possible to have different arrangement of carbon atoms in propane.
4. Isomers of butane, C₄H₁₀:

$ \ \ \ \ \ \ \text{H} \ \ \ \text{H} \ \ \ \text{H} \ \ \ \text{H} \\ \ \ \ \ \ \ \ \text{|} \ \ \ \ \ \text{|} \ \ \ \ \ \text{|} \ \ \ \ \ \text{|} \\ \text{H} {-} \text{C} {-} \text{C} {-} \text{C} {-} \text{C} {-} \text{H} \\ \ \ \ \ \ \ \ \text{|} \ \ \ \ \ \text{|} \ \ \ \ \ \text{|} \ \ \ \ \ \text{|} \\ \ \ \ \ \ \ \text{H} \ \ \ \text{H} \ \ \ \text{H} \ \ \ \ \text{H} \\ \ \ \ \ \ \ \ \ \ \text{n}-\text{butane}$

$ \ \ \ \ \ \ \text{H} \ \ \ \ \ \ \ \ \ \text{H} \ \ \ \ \ \ \ \ \ \text{H} \\ \ \ \ \ \ \ \ \text{|} \ \ \ \ \ \ \ \ \ \ \ \text{|} \ \ \ \ \ \ \ \ \ \ \ \text{|} \\ \text{H} {-} \text{C} \ \ \ {-} \ \ \ \text{C} \ \ \ {-} \ \ \ \text{C} {-} \text{H} \\ \ \ \ \ \ \ \ \text{|} \ \ \ \ \ \ \ \ \ \ \ \text{|} \ \ \ \ \ \ \ \ \ \ \ \text{|} \\ \ \ \ \ \ \ \text{H}\ \ \ \text{H} {-} \text{C} {-} \text{H} \ \ \ \text{H} \\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \text{|} \\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \text{H} \\ 2-\text{Methyl propane}$