Which of the following phenomnon occurs at absoulte zero temperature
Answers
The curious things that happen at low temperatures keep on throwing up surprises. Last week, scientists reported that molecules in an ultra-cold gas can chemically react at distances up to 100 times greater than they can at room temperature.
In experiments closer to room temperature, chemical reactions tend to slow down as the temperature decreases. But scientists found that molecules at frigid temperatures just a few hundred billionths of a degree above absolute zero (−273.15°C or 0 kelvin) can still exchange atoms, forging new chemical bonds in the process, thanks to weird quantum effects that extend their reach at low temperatures.
“It’s perfectly reasonable to expect that when you go to the ultra-cold regime there would be no chemistry to speak of,” says Deborah Jin from the University of Colorado in Boulder, whose team reported the finding in Science (DOI: 10.1126/science.1184121). “This paper says no, there’s a lot of chemistry going on.”