2.2.4 Quiz: The Periodic Table Question 3 of 10 2. Points How is hydrogen in heavy water different from hydrogen in normal water? A. The hydrogen atoms in heavy water have a neutron in the nucleus, doubling the mass. B. The hydrogen atoms in heavy water have an extra proton in the nucleus. O C. The hydrogen in heavy water is radioactive. O D. The heavy water molecules contain 3 hydrogen atoms instead of
Chemistry · Middle School · Thu Feb 04 2021
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A. The hydrogen atoms in heavy water have a neutron in the nucleus, doubling the mass.
In heavy water (D2O), the hydrogen atoms are actually deuterium atoms. Deuterium is an isotope of hydrogen that has one proton and one neutron in its nucleus, whereas the most common hydrogen isotope (protium) has only one proton and no neutrons. Therefore, each deuterium atom has about double the mass of a regular hydrogen atom. Heavy water is chemically similar to ordinary water (H2O), but it has a slightly different physical properties due to the increased mass of deuterium.