Answer: Melting point
Explanation:
Melting point is the temperature at which solid state gets converted to liquid state.
[tex]H_2O(s)\rightarrow H_2O(l)[/tex]
Boiling point is the temperature at which vapor pressure of the liquid becomes equal to atmospheric pressure. It is the temperature at which liquid state gets converted to gaseous state.
[tex]H_2O(l)\rightarrow H_2O(g)[/tex]
Electrical conductivity is the property of a material that characterizes a material how easily it can conduct electricity.
Thermal conductivity is the property of a material that characterizes a material how easily it can conduct heat.