1. Understand the Structure
* Propane: This is the parent chain, a three-carbon alkane (C3H8).
* Diamino: This indicates two amino (-NH2) groups attached to the propane chain.
* 1,2: These numbers tell us the positions of the amino groups on the propane chain.
2. Visualize the Structure
```
NH2
|
H - C - C - CH3
|
NH2
```
3. Count the Hydrogens
* Propane backbone: The three carbons contribute 8 hydrogens.
* Amino groups: Each amino group contributes 2 hydrogens, and there are two groups, for a total of 4 hydrogens.
4. Total Hydrogens
8 (from propane) + 4 (from amino groups) = 12 hydrogen atoms
Therefore, 1,2-diaminopropane has 12 hydrogen atoms.
