An electron orbiting a nucleus is electrically attracted to the nucleus; it's always being pulled closer. But the electron also has kinetic energy, which works to send the electron flying away.

One problem with this model is that it suggests that electrons orbit around the nucleus in perfect circles on the same plane, but this is not true. The more widely accepted model shows the electrons ...

Electron interaction with heavy nucleus calculated from first principles. The team believes that its approach represents a key milestone towards first-principles calculations of neutrino-nucleus ...

The nucleus of an atom is just a quadrillionth (10^–15) of a meter. ... we cannot actually define an orbit for an electron, and so instead they swarm around the nucleus in an indistinct "cloud".

Since the atomic nucleus was first proposed in 1911, physicists simply assumed it was round. ... An atom's chemistry is determined by the electron configuration, ...

Last year, scientists at TU Wien studied the formation of quantum entanglement on attosecond timescales, providing the first ...

The electron doesn't orbit its sun —the nucleus — at a fixed distance, but can skip between different orbits based on how much energy it carries, Bohr postulated.

So after the laser pulse, one electron flies away and one remains with the atom with unknown energy. "We can show that these two electrons are now quantum entangled," says Joachim Burgdörfer.

A nucleus, for high-atomic number atoms, contains more particles than does the element's electrons. ... with an electronic charge of +89 from all the protons in the nucleus minus the one electron.

A hydrogen atom has one proton as the nucleus and one electron in the region outside the nucleus. The electron and proton are attracted to each other. This attraction holds the atom together. It is ...