Bard also got it right when I asked about the statement in isolation. This shows that the output from these programs is inconsistent.
ME: Is the following statement correct, and if not, what is the correct version? "Deuterium is a heavier isotope of hydrogen with one more neutron in its nucleus, while oxygen-18 is a heavier isotope of oxygen with one more neutron and one more proton in its nucleus." Bard: The statement is not correct. Deuterium is a heavier isotope of hydrogen with one more neutron in its nucleus. Oxygen-18 is a heavier isotope of oxygen with two more neutrons in its nucleus. Deuterium (D) has one neutron and one proton in its nucleus, while protium (H) has no neutrons and one proton. Oxygen-18 (O-18) has eight neutrons and ten protons, while oxygen-16 (O-16) has eight neutrons and eight protons.
