Different atomic number but same atomic weight
Different atomic number and different atomic weight
Same atomic number but different atomic weight
None of these given options options
- Deuterium is a stable isotope of hydrogen, which, unlike “normal” hydrogen atoms, or protium, also contains a neutron. The isotope deuterium has one proton, one neutron and one electron.
- Deuterium can be traced throughout the water cycle, also known as the hydrological cycle: the process of water moving from the surface of the Earth to the atmosphere and back in a continuous cycle.
The atomic number of an element is the number of protons in the nucleus of an atom of that element. Atomic weight, also referred to as relative atomic mass, is the ratio of the mean mass of the atoms of a chemical element to a certain standard.
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