Here's why:

* Fe (Iron): Iron is a metal with a strong metallic bonding structure. The metallic bonds are strong and require a lot of energy to break, resulting in a high melting point (1538°C).

* CCl4 (Carbon Tetrachloride): Carbon tetrachloride is a covalent compound. The forces holding CCl4 molecules together are weaker van der Waals forces. These forces are easily overcome by heat, leading to a much lower melting point (-23°C).

In summary: The strong metallic bonding in iron makes it much more resistant to melting compared to the weak intermolecular forces in carbon tetrachloride.