This stopping power of an atom for an alpha particle is approximately proportional to the square root of its atomic weight. |
However, as a subatomic particle the electron is also a quantum-mechanical object. |
If any particle of organic matter falls into a carboy of acid, it is decomposed, and imparts a dark color to the liquid. |
According to quantum theory, the state of a particle is described as its wave function. |
Ionium expels an alpha particle and becomes radium, which is a bivalent element resembling barium belonging to the second group. |
For 50 years, scientists had predicted the existence of the particle we now know as Higgs boson, which gives mass to matter. |