Yes - it is a perfect diamagnet below its transition temperature
Water is not a superconductor.
Mercury is not a magnetic matertial. Notes indicate that it is weakly diamagnetic, i.e. it is repulsed by magnetic fields. So some mercury alloys would also be weakly diamagnetic. Notes indicate that at very low temperatures (4K), mercury becomes a superconductor and it becomes a much stronger diamagnet (repelled). Apparently this magnetizes the mercury at this low temperature. See links.
Low temperature. A superconductor doesn't 'perform' at all, and isn't even a superconductor, above its critical temperature.
Diamagnetic
A superconductor superconducts ONLY at extremely low temperature.
Either a superconductor (cold), or a diamagnetic metal (doesn't have to be cold, but a pretty weak repeller).
It is paramagnetic because it has unpaired electrons.
Water is not a superconductor.
diamagnetic
yes, silicon is diamagnetic
Diamagnetic
Mercury is not a magnetic matertial. Notes indicate that it is weakly diamagnetic, i.e. it is repulsed by magnetic fields. So some mercury alloys would also be weakly diamagnetic. Notes indicate that at very low temperatures (4K), mercury becomes a superconductor and it becomes a much stronger diamagnet (repelled). Apparently this magnetizes the mercury at this low temperature. See links.
No, because it is diamagnetic.
American Superconductor was created in 1987.
No. Salt water is a conductor but not a superconductor.
Low temperature. A superconductor doesn't 'perform' at all, and isn't even a superconductor, above its critical temperature.
Diamagnetic. All of the electrons are paired.