Question

Why does Sodium sulfide have a high melting point?

Answer 1

• The melting point of a compound is defined as the temperature at which it begins changing from a solid state to a liquid state.
• Sodium sulfide is an ionic compound. It is solid at room temperature.
• It has a high melting point because of the strong electrostatic force of attraction between the sodium and sulfide ions.
• Extra heat energy is required to melt this compound. It means if we increase the temperature, this compound will start melting.
• So, the compound melts at a high temperature.
• Hence, Sodium sulfide has a high melting point.