Neutrinos and antineutrinos are elementary particles with small but unknown mass. High-precision atomic mass measurements at ...

James Cameron's Ghosts of Hiroshima risks turning nuclear tragedy into spectacle in Hollywood’s atomic obsession trend.

Scientists use the periodic table to quickly refer to information about an element, like atomic mass and chemical symbol. The periodic table’s arrangement also allows scientists to discern trends in ...

An error by one of the world's greatest scientists derailed Germany's effort to build an atomic bomb during WWII.

This Q-value calculation programme allows you to calculate reaction Q-values and threshold energies and decay Q values based on the 1995 Update to the Atomic Mass Evaluation and to retrieve other ...

was less than the atomic mass (average mass of the atom). For example, a helium atom has an atomic mass of 4, but an atomic number (or positive charge) of 2. Since electrons have almost no mass ...

Fission splits a heavy element (with a high atomic mass number) into fragments; while fusion joins two light elements (with a low atomic mass number), forming a heavier element. In both cases, energy ...

25% of chlorine atoms are 37 Cl and 75% are 35 Cl. The weighted mean mass of chlorine is 35.5. The relative atomic mass of an element is a weighted mean mass of the isotopes of an element compared ...

Save guides, add subjects and pick up where you left off with your BBC account. Chlorine naturally exists as two isotopes, \(_{17}^{35}\textrm{Cl}\) (chlorine-35) and \(_{17}^{37}\textrm{Cl} ...

NAGASAKI—About a thousand people attended a memorial Mass at the Urakami Cathedral here on April 27 for Pope Francis, who had ...

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 ...