Trimethylamine molecule is ............ in shape, while the shape of trisilylamine is ……………. .

Explanation

To answer the question regarding the shapes of trimethylamine and trisilylamine, we will analyze the molecular structures and hybridization of the nitrogen atom in each compound.

### Step-by-Step Solution:

1. **Identify the Molecular Formulas:**
- Trimethylamine has the molecular formula: \( \text{N(CH}_3\text{)}_3 \)
- Trisilylamine has the molecular formula: \( \text{N(SiH}_3\text{)}_3 \)

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