* Ionic Compound: Sodium bromide is an ionic compound. This means it's composed of positively charged sodium ions (Na+) and negatively charged bromide ions (Br-).
* Free Ions in Liquid State: When sodium bromide is melted, the ionic bonds holding the ions together break down. This allows the ions to move freely within the liquid.
* Electrical Conductivity: The presence of free, mobile ions in the liquid state enables the substance to conduct electricity. When an electric potential is applied, the positive ions move towards the negative electrode, and the negative ions move towards the positive electrode, creating an electric current.
Key Point: Sodium bromide, like other ionic compounds, only conducts electricity when it's in a molten state or dissolved in a solvent (like water) where the ions can move freely. In its solid state, the ions are fixed in a crystal lattice and cannot conduct electricity.
