Describe how sodium conducts thermal energy. (3 marks) GCSE AQAWatch
In the mark scheme it mentions 'delocalised electrons from the outer shell' 'free to move' and 'energy transferred through the structure'. Online it mentions sodium conducting when it's in a molten state'. Help!
Electrical conductivity: The electrons are free to move over the whole structure (delocalised) and so can move towards a positive potential and away from a negative potential.