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Isotope hydrology helps governments find and understand the source of their water supplies – so they can develop management ...

The word magic is not often used in the context of science. But in the early 1930s, scientists discovered that some atomic nuclei – the center part of atoms, which make up all matter – were more ...

Key fact: isotopes are forms of an element that have the same number of protons but different numbers of neutrons. There are three isotopes of hydrogen: hydrogen, deuterium (hydrogen-2 ...

Key fact Isotopes are forms of an element that have the same number of protons but different numbers of neutrons. There are three isotopes of hydrogen: hydrogen, deuterium (hydrogen-2) and tritium ...

Oxygen, for example, has eight protons. However, the number of neutrons in an atom can vary, leading to different forms of ...

Atomic nuclei with “magic numbers” of protons or neutrons in their nuclear shells are extremely stable. Nuclear physicists ...

The isotope lead-208 was predicted to be extremely ... Having a “magic” number of protons or neutrons means there are enough to fully occupy the nuclear valence shells (outermost orbits ...

While the number of protons is the same for all atoms of a particular element, different atoms can have different numbers of neutrons. Different isotopes of elements have different numbers of ...

important evidence for the existence both of heavy water and of isotopes—atoms of an element that have the same number of protons but a different number of neutrons and, therefore, different ...