While the number of protons defines the element (e.g., hydrogen, carbon, etc.) and the sum of the protons and neutrons gives the atomic mass, the number of neutrons defines the isotope of that element ...

Various chemical analyses by the Italian team revealed a new element, which could be extracted by boiling with sodium hydroxide ... even the longest-lived isotope of the element has a half-life ...

Elements and their isotopes have “magic ... In a phenomenon known as the island of inversion, isotopes of neon, sodium, and magnesium with 20 neutrons also show a lack of nuclear shell closure.

Most elements exist in two or more forms, known as isotopes. Isotopes have the same number of protons but differ in their number of neutrons, resulting in different masses. The lighter form is ...

Eighty out of the first 82 elements in the periodic table have stable isotopes. Measuring and analysing their distribution allows for many practical applications. The IAEA assists Member States in ...