(v) Impurties are more soluble in the melt than in the solid state of the metal.

Explanation

**Step-by-Step Solution:**

1. **Understanding the States of Matter:**
- Metals can exist in two states: solid and liquid (melt).
- In the solid state, metal atoms are arranged in a regular, fixed pattern known as a crystal lattice.

2. **Behavior of Atoms in Solid State:**
- In the solid state, the arrangement of atoms is orderly and tightly packed.
- This regular arrangement restricts the movement of atoms, making it difficult for foreign atoms (impurities) to fit into the lattice structure.

3. **Melting of Metals:**
- When a metal is heated to its melting point, it transitions from a solid to a liquid state.
- In the liquid state, the orderly arrangement of atoms is lost, and the atoms can move more freely.

4. **Irregularities in the Melt:**
- The melting process creates irregularities and spaces between the atoms in the liquid state.
- These irregularities allow for greater flexibility and movement, enabling impurities to fit into the spaces between the metal atoms.

5. **Solubility of Impurities:**
- Due to the presence of these irregularities in the melt, impurities can easily dissolve and combine with the metal.
- In contrast, in the solid state, the rigid structure makes it challenging for impurities to be accommodated.

6. **Conclusion:**
- Therefore, impurities are more soluble in the melt than in the solid state of the metal because the irregularities in the liquid state facilitate the incorporation of impurities, while the ordered structure of the solid state restricts it.

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