In most atoms, electrons occupy a zone exterior to the nucleus. Though electrons are often represented as particles in discreet orbits around the nucleus, they cannot be said to occupy a specific point in space. Rather, ... More »

An electron is a negatively charged sub-atomic particle that is located in an atom along with protons and neutrons. The electrons are found in shells and sub-orbitals that surround the nucleus of the atom. More » Science Chemistry Atoms & Molecules

The electron cloud of an atom is the area outside an atom's nucleus in which electrons exist. The Bohr model of the atom, popular in the early 20th century, was disproven by quantum physics theories put forth by Werner H... More »

A nitrogen atom's appearance consists of a nucleus that's surrounded by one orbital containing two electrons and a second orbital containing five electrons. The total number of electrons in one atom of nitrogen can be de... More »

Rutherford's nuclear model of the atom is a planetary model with electrons orbiting around a compact nucleus of protons, and it serves as the basic model of the atom. His proposed electron orbitals were relatively simple... More »

The nucleus of an atom is surrounded by particles called electrons. These electrons revolve around the nucleus in paths called orbitals, which vary in their complexity. More »

The atomic radius describes the size of the atom, and although there is no standard definition for the value, it is the distance between the nucleus and the outermost electrons. Atomic radii tend to increase moving down ... More »