The ordinary isotope of hydrogen, with no neutrons, is sometimes called protium.
The term proton refers to the cation of protium, the most common isotope of hydrogen.
Because the nucleus of this isotope consists of only a single proton, it is given the descriptive but rarely used formal name "protium".
Sivana sees they had an element called protium.
The deuterium in heavy water has a very much lower absorption affinity for neutrons than does protium (normal light hydrogen).
Protium and deuterium readily diffuse through the alloy membrane.
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.
H atom is called protium.
