but it was dropped for just plain Atom within a few months of its introduction. THIS DEFINITION IS FOR PERSONAL USE ONLY. All other reproduction requires permission.

Single-atom catalysts are at the cutting edge of catalysis research ... promising significant advancements in material science, energy, and environmental sustainability.

Quantum theory is very strange. It says that an object like a particle or an atom that adheres to quantum rules doesn’t have a reality that can be pinned down until it is measured. Until then ...

which explains the stability of the nucleus at the heart of the atom; and the weak nuclear force, which explains why some atoms undergo radioactive decay. Over the past five decades or so these ...