An electron from a new atom would have to join an atom in the H 2 molecule on the next energy level, further from the nucleus where it would not feel a strong enough attraction. An electron from an ...

Half a century ago, Walter Henneberger wondered if it was possible to free an electron from its atom, but still make it stay around the nucleus. Scientists considered it was impossible. For the ...

In a discovery that brings a legendary quantum theory to life, physicists at Princeton University have directly observed Hofstadter’s butterfly — a fractal pattern in electron energy levels ...

An electron makes its escape It's like catching light in action. For the first time, physicists have measured changes in an atom to the level of zeptoseconds, or trillionths of a billionth of a ...

With the development of single-atom transistors, consisting of single dopants, nanofabrication has reached an extreme level of miniaturization. Promising functionalities for future nanoelectronic ...

Positronium is composed of an electron, with a negative charge, circling in orbit with a positron, with a positive charge — making what’s effectively an atom without a nucleus (SN: 9/12/07).

If an electron is in an excited state it can return to a lower energy level. When it does this, it loses energy. The amount of energy it loses will be equal to the difference in the energy levels ...

Vaishnav and Clark's proposal begins with an atom--rubidium-87 is an example--that has a 'tripod' arrangement of electron energy levels, consisting of one higher energy level above three equal ...

Magic numbers refer to the amount of electrons it would take to fill those energy-level shells around an atomic nucleus. Conventionally, these numbers are 2, 8, 20, 28, 50, 82 and 126.

The electron from each atom feels the attraction from the proton in the nucleus of the other atom. This attraction pulls the atoms together and the electrons are shared by both atoms. The atoms bond ...