Why `AlF_(3)` is a high melting solid wheareas `SiF_(4)` is a gas ?

Explanation

To understand why AlF₃ is a high melting solid while SiF₄ is a gas, we can analyze the nature of the bonds and the types of forces present in each compound.

### Step-by-Step Solution:

1. **Identify the Nature of the Compounds**:
- AlF₃ (Aluminum Fluoride) is an ionic compound.
- SiF₄ (Silicon Tetrafluoride) is a covalent compound.

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