Propanal is____than propanone towards nucleophiles.

Explanation

To determine the reactivity of propanal (an aldehyde) compared to propanone (a ketone) towards nucleophiles, we need to analyze the structures and electron density of both compounds.

### Step-by-Step Solution:

1. **Identify the Structures**:
- **Propanal** (an aldehyde) has the structure:
\[
\text{CH}_3\text{CH}_2\text{CHO}
...