Thank you for bringing to my attention the recent International Union of Pure & Applied Chemistry report “Atomic weights of the elements 2009” (C&EN, Dec. 20 ...

Conventional neutron numbers are based on the approximations that the mass of the electron is zero and that those of the proton and neutron are each equal to unity. It was shown, by using the exact ...

COMPARISONS between the results of accurate quantum-mechanical calculations on atoms and molecules have been made unnecessarily complicated and sometimes even impossible by the lack of an agreed and ...

High-precision measurements of the mass of the deuteron, the nucleus of heavy hydrogen, provide new insights into the reliability of fundamental quantities in atomic and nuclear physics. This is ...

For the first time those little numbers that appear beneath some of the commonest elements in the periodic table boxes are about to change from a single value to an interval of numbers An ...

Atoms are the fundamental components of matter, made up of three subatomic particles: protons, neutrons, and electrons. The structure of atoms determines the properties and behavior of different ...

CHENNAI: Chairman of the Atomic Energy Commission (AEC) Anil Kakodkar on Thursday assured top officials of the Tamil Nadu Electricity Board (TNEB) that all efforts were being taken to increase power ...