In atomic physics and quantum chemistry, the electron configuration is the distribution of electrons of an atom or molecule (or other physical structure)...

This page shows the electron configurations of the neutral gaseous atoms in their ground states. For each atom the subshells are given first in concise...

(period) is started when a new electron shell has its first electron. Columns (groups) are determined by the electron configuration of the atom; elements with...

dependent upon its electronic configuration. For a main-group element, a valence electron can exist only in the outermost electron shell; for a transition metal...

Configurations of elements 109 and above are not available. Predictions from reliable sources have been used for these elements. Grayed out electron numbers...

determining their respective electron configuration. Nuclear charge: If the nuclear charge (atomic number) is greater, the electrons are held more tightly by...

being able to hold up to 2(n2) electrons. For an explanation of why electrons exist in these shells, see electron configuration. Each shell consists of one...

the 1s subshell has 2 electrons, the 2s subshell has 2 electrons, the 2p subshell has 6 electrons, and so on. The configuration is often abbreviated by...

topological space Configuration space (physics), in classical mechanics, the vector space formed by the parameters of a system Electron configuration, the distribution...

losing, or sharing electrons until they have achieved a valence shell electron configuration with a full octet of (8) electrons, hydrogen (H) can only...

nonmetal) with greater electron affinity accepts one or more electrons to attain a stable electron configuration, and after accepting electrons an atom becomes...

few electrons short of a stable configuration. As such, they have the tendency to gain more electrons in order to achieve a stable configuration. This...

chemical bond that involves the sharing of electrons to form electron pairs between atoms. These electron pairs are known as shared pairs or bonding pairs...

The d electron count or number of d electrons is a chemistry formalism used to describe the electron configuration of the valence electrons of a transition...

element 164 with a 7d109s0 electron configuration shows clear analogies with palladium with its 4d105s0 electron configuration. The noble metals of this...

non-bonded electrons as a lone pair in an sp orbital and the other two occupying a degenerate pair of p orbitals. The electron configuration is consistent...

represents an actual value of a physical quantity. For a given electron configuration of an atom, its state depends also on its total angular momentum...

that n = 4, the first 18 electrons have the same configuration of Ar at the end of period 3, and the overall configuration is [Ar]3d24s2. The period...

matter. In this model, the electron cloud of an atom may be seen as being built up (in approximation) in an electron configuration that is a product of simpler...

repulsion. B and C correspond with individual d-electron repulsions. A is constant among d-electron configuration, and it is not necessary for calculating relative...

other chemical substances, results from their electron configuration: their outer shell of valence electrons is "full", giving them little tendency to participate...

The rule is based on the fact that the valence orbitals in the electron configuration of transition metals consist of five (n−1)d orbitals, one ns orbital...

for more details.) For an explanation of why electrons exist in these shells see electron configuration. If the potential energy is set to zero at infinite...

some disagreement on which configuration has the lower energy. Chemistry textbooks quote nickel's electron configuration as [Ar] 4s2 3d8, also written...

sometimes requiring identity of the total electron count and with it the entire electronic configuration. More usually, definitions are broader, and...

or more open electronic shells. The rule states that for a given electron configuration, the lowest energy term is the one with the greatest value of spin...

an electron configuration closely similar to that of a free atom in an external field, except that the outer parts of the electron configurations surrounding...

orbital, describing the behaviour of an electron in a molecule Electron configuration, the arrangement of electrons in structures such as atoms or molecules...

such a way that each atom has eight electrons in its valence shell, giving it the same electronic configuration as a noble gas. The rule is especially...

referred to simply as Hund's Rule. The three rules are: For a given electron configuration, the term with maximum multiplicity has the lowest energy. The multiplicity...