Urey and his co-workers evaporated liquid hydrogen near its triple point (13.9 K) under reduced pressure, when 4 litres of liquid hydrogen is reduced
Urey and his co-workers evaporated liquid hydrogen near its triple point (13.9 K) under reduced pressure, when 4 litres of liquid hydrogen is reduced to only 1 ml which on spectroscopic study give fant lines in the spectrum. This is the due to
A. `._(1)^(1)H`
B. `._(1)^(2)H`
C. `._(1)^(3)H`
D. `H_(3)`
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