Question

do ortho and para hydrogen exist in deuterium and tritium

Answer 1

For the deuterium molecule [7782-39-OJ, die ortho—para relationship is the opposite of that in YL y die ortho form is the more prevalent one at low temperatures. For instance, at 20 K, the equihbrium concentration of D2 is 97.97% ortho, and at 220 K it is 66.66% deuterium (12)