The oxidation state + 3 originates from the 6d < sup > 1 </ sup > 7s < sup > 2 </ sup > electronic configuration of actinium, that is it easily donates 3 electrons assuming a stable closed-shell structure of the noble gas radon.

The lowest-energy configuration of the dioxygen molecule is a stable, relatively unreactive diradical in a triplet spin state.

Thus, the most stable configuration of nuclei and electrons is one in which the electrons spend more time between nuclei, than anywhere else in space.

Sodium loses its outer electron to give it a stable electron configuration, and this electron enters the fluorine atom exothermic ally.

The formation of an ionic bond proceeds when the atom of an element ( usually metal ), whose ionization energy is low, releases some of its electron ( s ) to achieve a stable electron configuration and after releasing some of its electron ( s ) the atom becomes a cation.

The atom of another element ( usually non metal ), whose electron affinity is positive, then accepts the electron ( s ), again to attain a stable electron configuration and after accepting electron ( s ) the atom becomes an anion.

Typically, the stable electron configuration is one of the noble gases for elements in the s-block and the p-block, and particular stable electron configurations for d-block and f-block elements.

A metastable state of weaker bond ( 1 ), a transitional ' saddle ' configuration ( 2 ) and a stable state of stronger bond ( 3 ).

This excited state is unfavourable and the compound nucleus will almost instantaneously de-excite ( transmutate ) into a more stable configuration through the emission of a prompt particle and one or more characteristic prompt gamma photons.

In most cases this more stable configuration yields a radioactive nucleus.

Potassium atoms have 19 electrons, which is one more than the extremely stable configuration of argon.

In contrast, the second ionization energy is very high ( 3052 kJ / mol ), because removal of two electrons breaks the stable noble gas electronic configuration.

This produces a stable, minimum energy configuration in which the outer electrons are tightly bound.

Researchers are also interested in proteins that can fold into more than one stable configuration ; protein aggregation diseases such as Alzheimer's Disease and Huntington's Disease as well as prion diseases such as Mad Cow disease can be better understood by constructing ( and deconstructing ) disease models ; the most common way of doing this is by developing a way of inducing the desired disease state in test animals ( administering MPTP to give the animals Parkinson's disease, or knocking out a gene essential for the prevention of certain tumors from the animals ' genomes ).

It created a configuration of continents that would remain stable for hundreds of millions of years in the form of the continent Gondwana.

The cis isomers are less stable and can readily convert to the all-trans configuration ( as seen in the structure of all-trans-retinol shown here ).

This produces a stable, minimum energy configuration in which the outer electrons are tightly bound.

Cerium also forms compounds with the + 4 oxidation state ; Ce < sup > 4 +</ sup > has the very stable electronic configuration of the noble gas xenon and is a strong oxidising agent.

Due to sense amplifier's positive feedback configuration, it will hold a bit-line at stable voltage even after the forcing voltage is removed.

Hegemony is the preponderance of power at one pole in the international system, and the theory argues this is a stable configuration because of mutual gains by both the dominant power and others in the international system.

The initial configuration, however, is not stable and radiates energy as gamma rays.

However, whereas the first refers to a stable configuration of two touching stars in a binary with a typical lifetime of millions to billions of years, the latter describes a dynamically unstable phase in binary evolution which either expels the stellar envelope or merges the binary in a timescale of months to years.

An inversion layer is when the normal temperature ( warm air below, cold air above ) profile is reversed, creating a stable configuration of dense, cold air sitting below lighter, warm air.

This colt is behind most of the other 2-year-olds in the Simpson stable but can show about as much pace as any of them.

The last-named is one of the favorites in the stable, and the boys like her very much.

Lightweight, non-absorbent, fire resistant and dimensionally stable, it is easily bonded to the wood with contact cement.

and it is as if the only stable relation left among the different parts of the picture is the ambivalent and ambiguous one that each has with the surface.

It could be argued that any fellowship which centers in residential neighborhoods is doomed to become an expression of the panic for stable identity among the middle classes.

Due to the averaging it is far more stable than any clock would be alone ( see signal averaging for a discussion ).

Argon is chemically inert under most conditions and forms no confirmed stable compounds at room temperature.

Antimony is stable in air at room temperature, but reacts with oxygen if heated to form antimony trioxide, Sb < sub > 2 </ sub > O < sub > 3 </ sub >.

The most stable of these is < sup > 124 </ sup > Sb with a half-life of 60. 20 days, which has an application in some neutron sources.

All of its isotopes are short-lived ; the most stable is astatine-210, with a half-life of 8. 1 hours.

Six astatine isotopes, with mass numbers of 214 to 219, are present in nature as the products of various decay routes of heavier elements, but neither the most stable isotope of astatine ( with mass number 210 ) nor astatine-211 ( which is used in medicine ) is produced naturally.

Among the first 101 elements in the periodic table, only francium is less stable.

The atomic nucleus contains a mix of positively charged protons and electrically neutral neutrons ( except in the case of hydrogen-1, which is the only stable nuclide with no neutrons ).

For such an online algorithm, a recurrence relation is required between quantities from which the required statistics can be calculated in a numerically stable fashion.

A numerically stable algorithm is given below.

For substances which have two ( or more ) stable crystalline forms, such as diamond and graphite for carbon, there is a kind of " chemical degeneracy ".

The subject of nearly all of Maillol's mature work is the female body, treated with a classical emphasis on stable forms.

Current hypotheses suggest that asexual reproduction may have short term benefits when rapid population growth is important or in stable environments, while sexual reproduction offers a net advantage by allowing more rapid generation of genetic diversity, allowing adaptation to changing environments.

trans-Cyclooctene is a stable strained alkene and the orbital misalignment is only 19 ° with a dihedral angle of 137 ° ( normal 120 °) and a degree of pyramidalization of 18 °.

The trans isomer of cycloheptene is only stable at low temperatures.

Although the permanency of acrylics is sometimes debated by conservators, they appear more stable than oil paints.