Oxygen isotopes boost neutron scattering
However, much more information can be obtained by repeating the scattering experiment with a sample in which atoms of one type (typically hydrogen) are replaced by a suitable isotope of the same atom (typically ... attention to oxygen-18 and oxygen-16.
Gold, 18 Elements Get a New Atomic Weight
atomic mass units? No longer. The International Union of Pure and Applied Chemistry says it's now 112.414(4) amu, reports LiveScience. Fans of the nonmetal selenium may note that this is the first time the element's weight has been revised since 1934.
Atomic Weights Changed For Gold, 18 Other Chemical Elements
The standard atomic weight is the average mass of an element in atomic mass units. One atomic mass unit, or amu, is equal to 1/12 the mass of a single carbon-12 atom. (To put that in perspective, a single carbon atom is roughly equal to 5.857 × 10^-26 ...
Nuclear-atomic overlap for the isotope thorium-229
More than 99.9% of the mass of any atom is concentrated into a quadrillionth ... have been exploring one area of nuclear-atomic overlap for the isotope thorium-229. This isotope is a candidate for a new type of atomic clock and quantum information processor.
What is The Periodic Table of Elements?
Kidzworld tells you what the Periodic Table of Elements is about, how to read this chart ... the atomic mass. Atomic Number - An element is defined by the number of protons in it. Carbon atoms have six protons, hydrogen atoms have one proton and oxygen ...