Chlorine naturally exists as two isotopes, \(_{17}^{35}\textrm{Cl}\) (chlorine-35) and \(_{17}^{37}\textrm{Cl}\) (chlorine-37). The abundance of chlorine-35 is 75% ...

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 ...

This is how carbon looks on a revised periodic table that uses intervals for the standard atomic weights of some elements. Standard atomic weights, those numbers emblazoned under the elements on the ...

Quantum mechanical calculations of atomic systems comprise a suite of computational methods that rigorously apply the principles of quantum mechanics to determine a range of atomic properties. These ...

Breakthroughs, discoveries, and DIY tips sent every weekday. Terms of Service and Privacy Policy. Cadmium, are you looking a bit chubbier these days? Improved ...

Molar mass is the mass of one mole of a given substance, typically expressed in grams per mole (g/mol). It is a fundamental concept in chemistry that helps relate the mass of a substance to the amount ...

Standard atomic weights, those numbers emblazoned under the elements on the periodic table, were once thought of as unchanging constants of nature. But researchers have tweaked the atomic weights of ...