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Why do metals have different melting and boiling points?
The melting point of a Metal is the temperature at which the metal begins to transform from a solid phase into a liquid phase. At the melting temperature, the solid phase and liquid phase of metal exist in equilibrium.
The boiling point of a Metal is the temperature at which the vapour pressure of a liquid metal equals the pressure surrounding the liquid Metal and hence, the liquid changes into a vapour.
Energy is transferred to a substance to melt or boil it. This energy is needed to overcome the forces of attraction between the metal ions and the delocalised electrons in the metal. The more energy needed, the higher the melting point or boiling point. As attraction force among the metal ions varies in different metals, therefore different Metals have different melting and boiling point.
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