Atomic Number and Mass Number of Elements: Atoms are the building blocks of matter. They are responsible for the format of all living and non-living things. Understanding their molecular structure and ...

AFTER the discovery by Urey of the isotope of hydrogen of mass 2 (deuterium) and its concentration by electrolysis, it was natural to examine whether any other stable isotopes of hydrogen, and ...

An element's atomic number defines it. An element with 17 protons will always be chlorine. However an element's mass numbers can vary, which means that it can have different numbers of neutrons. So ...

Scientists have created ultra-light and ultra-heavy forms of the element hydrogen, and have investigated their chemical properties. Donald Fleming, a chemist at the University of British Columbia in ...

Scientists have produced one of the most neutron-rich isotopes, hydrogen-6, in an electron scattering experiment. The experiment presents a new method for investigating light, neutron-rich nuclei and ...

Atoms are very small. They have a radius of around 1 × 10 10 metres. This symbol shows that chlorine has 35 particles in the nucleus (protons and neutrons), 17 of which are protons. It also tells us ...

A team at the Colorado School of Mines is working to create hydrogen membranes for use in nuclear fusion power plants. The project, funded by the U.S. Department of Energy’s Advanced Research Projects ...