Question

Which conductor has the highest critical temperature?

Answer 1

1. Conductors are defined as those materials in which no barriers are there in the flow of electrons.
2. Every material has its own resistivity which may vary as according to temperature variation.
3. The resistivity increases by increasing the temperature and decreases by decreasing the temperature.
4. The materials with 0 resistivities at specific temperatures are called superconductors.
5. This temperature is called critical temperature.
6. The very first element that is found to have the properties of superconductors is Mercury at $4\mathrm{K}$
7. The superconductor which has the highest critical temperature is Mercury, Barium, Thallium, Copper oxide.
8. The critical temperature of this material is $139\mathrm{K}$.
9. Therefore, conductor has the highest critical temperature is superconductor.