Similarly, sound travels about 1.41 times faster in light hydrogen (protium) gas than in heavy hydrogen (deuterium) gas, since deuterium has similar properties but twice the density.
H atom is called protium.
The nucleus of deuterium, called a deuteron, contains one proton and one neutron, whereas the far more common hydrogen isotope, protium, has no neutron in the nucleus.
Protium and deuterium readily diffuse through the alloy membrane.
The deuterium in heavy water has a very much lower absorption affinity for neutrons than does protium (normal light hydrogen).
Sivana sees they had an element called protium.
Because the nucleus of this isotope consists of only a single proton, it is given the descriptive but rarely used formal name "protium".
The term proton refers to the cation of protium, the most common isotope of hydrogen.
