Assertion: hydrogen atom's nucleus | /r/MadeOf | neutron
Facets:
Source sentences:
text: All nuclei (except hydrogen) contain neutrons as well as protons.
text: The nucleus of a deuterium atom, called a deuteron, contains one proton and one neutron, whereas the far more common protium has no neutrons in the nucleus.
text: A third form of hydrogen atoms have nuclei containing two neutrons; hydrogen with A =3 is called tritium(T), a radioactive species.
text: For stable nuclei (not halo nuclei or other unstable distorted nuclei) the nuclear radius is roughly proportional to the cube root of the mass number (A) of the nucleus, and particularly in nuclei containing many nucleons, as they arrange in more spherical configurations:
text: The nucleus contains protons and neutrons, which are closely packed together.