Found in heavy water, FTP, name this isotope of hydrogen that contains one neutron.
This isotope is relatively enriched in the Martian atmosphere, probably as a result of thermal Jeans escape of its lighter counterpart. The primordial abundance of this isotope produced in Big Bang nucleosynthesis provides an important constraint on the density of ordinary baryonic matter. Stellar neutrinos are generated in a reaction which produces nuclei of this isotope through a weak interaction as the second step in the proton-proton chain. That weak interaction involves changing one of two fused protons into a neutron. Found in heavy water, FTP, name this isotope of hydrogen that contains one neutron.
This isotope is relatively enriched in the Martian atmosphere, probably as a result of thermal Jeans escape of its lighter counterpart.
deuterium