Question

Conductivity of electrolytes lower than metal at room temperature

Answer 1

Because the only way a current can be carried through an electrolyte is via the movement of ions, which will be slow, and the concentration of ions is low compared to the electrons that are present in a bulk metal. Metals are basically a mesh of nuclei soaking in a liquid of electrons that are free to move under the slightest pressure of electrons from a source voltage, the latter having excess electrons