How do metallic bonds affect melting points?

What role do metallic bonds play in determining the melting points of metals?

Metallic bonds are strong interactions between metal atoms, which contribute to higher melting points due to the energy required to break these bonds.

Can you explain why some metals have higher melting points than others?

Certainly! Metals with more delocalized electrons and stronger metallic bonds, like tungsten, tend to have higher melting points compared to those with fewer electrons, like mercury.

Are there any exceptions to this trend?

Yes, there are exceptions. For example, gallium has a low melting point despite having metallic bonds, due to its unique crystal structure.

How do impurities in metals affect their melting points?

Impurities can disrupt the metallic bonding structure, often lowering the melting point by making it easier for the metal to transition to a liquid state.