In the first reaction a fluoride ion, F < sup >−</ sup >, gives up an electron pair to boron trifluoride to form the product tetrafluoroborate.

A proton is transferred from an unspecified Brønsted acid to ammonia, a Brønsted base ; alternatively, ammonia acts as a Lewis base and transfers a lone pair of electrons to form a bond with a hydrogen ion.

Autosomes appear in pairs whose members have the same form but which differ from other pairs in a diploid cell, whereas members of an allosome pair may differ from one another and thereby determine sex.

Lewis theory explains that an acid is a substance which is capable of accepting a pair of electrons from another substance during the process of bond formation, while a base is a substance which can provide a pair of electrons to form a new bond.

* Every pair of congruence relations for an unknown integer x, of the form x ≡ k ( mod a ) and x ≡ l ( mod b ), has a solution, as stated by the Chinese remainder theorem ; in fact the solutions are described by a single congruence relation modulo ab.

Because chip packaging was not available with enough pins, the F8 was instead fabricated as a pair of chips that had to be used together to form a complete CPU.

By moving the unit vectors so their tails coincide, as seen in the circle at the left of the image above, it is seen that u < sub > ρ </ sub > and u < sub > θ </ sub > form a right-angled pair with tips on the unit circle that trace back and forth on the perimeter of this circle with the same angle θ ( t ) as r ( t ).

The name derives from the fact that the words CLABBERS and SCRABBLE form an anagram pair.

Here, purines form hydrogen bonds to pyrimidines, with A bonding only to T, and C bonding only to G. This arrangement of two nucleotides binding together across the double helix is called a base pair.

In its simplest form, Euclid's algorithm starts with a pair of positive integers and forms a new pair that consists of the smaller number and the difference between the larger and smaller numbers.

Since 1989-867 = 1122, we form a new pair of numbers

The simplest form of Euclid's algorithm starts with a pair of positive integers and forms a new pair that consists of the smaller number and the difference between the larger and smaller numbers.

Thus the division form of Euclid's algorithm starts with a pair of positive integers and forms a new pair that consists of the smaller number and the remainder obtained by dividing the larger number by the smaller number.

Koch snowflake, a fractal that begins with an equilateral triangle and then replaces the middle third of every line segment with a pair of line segments that form an equilateral " bump "

* Adagio skating, a form of pair skating most commonly seen in ice shows, where the skaters perform many acrobatic lifts but few or none of the other elements which competitive pairs must perform.

Twist lifts are a form of pair lifts, where the lifted partner is thrown into the air, twists, and is caught by the lifted partner.

Given a groupoid G, the vertex groups or isotropy groups or object groups in G are the subsets of the form G ( x, x ), where x is any object of G. It follows easily from the axioms above that these are indeed groups, as every pair of elements is composable and inverses are in the same vertex group.

The Acts of Union between the Kingdom of England and the Kingdom of Scotland were a pair of Parliamentary Acts passed by both parliaments in 1707, which dissolved them in order to form a Kingdom of Great Britain governed by a unified Parliament of Great Britain according to the Treaty of Union.

Later the staff had two intertwined snakes and sometimes it was crowned with a pair of wings and a ball, but the old form remained in use even when Hermes was associated with Mercury by the Romans.

An icosidodecahedron can be split along any of six planes to form a pair of pentagonal rotundae, which belong among the Johnson solids.

Fluoride " loses " a pair of valence electrons because the electrons shared in the B — F bond are located in the region of space between the two atomic nuclei and are therefore more distant from the fluoride nucleus than they are in the lone fluoride ion.

The species that gains the electron pair is the Lewis acid ; for example, the oxygen atom in H < sub > 3 </ sub > O < sup >+</ sup > gains a pair of electrons when one of the H — O bonds is broken and the electrons shared in the bond become localized on oxygen.

The lone pair of electrons on the nitrogen is delocalized into the carbonyl, thus forming a partial double bond between N and the carbonyl carbon.

As predicted by the VSEPR model of electron pair repulsion, the molecular geometry of alkenes includes bond angles about each carbon in a double bond of about 120 °.

A bachelor is a man who is not married ( see single person ) or who is not in a pair bond.

In the simplest view of a so-called ' covalent ' bond, one or more electrons ( often a pair of electrons ) are drawn into the space between the two atomic nuclei.

The electron pair from the nucleophile attacks the substrate forming a new bond, while the leaving group departs with an electron pair.

Ligands are generally bound to the central atom by a coordinate covalent bond ( donating electrons from a lone electron pair into an empty metal orbital ), and are said to be coordinated to the atom.

A hydrogen bond is the attraction between the lone pair of an electronegative atom and a hydrogen atom that is bonded to either nitrogen, oxygen, or fluorine.

* Chemistry: Molecular theory — Kinetic theory of gases — Molecular orbital theory — Valence bond theory — Transition state theory — RRKM theory — Chemical graph theory — Flory-Huggins solution theory — Marcus theory — Lewis theory ( successor to Brønsted – Lowry acid – base theory ) — HSAB theory — Debye – Hückel theory — Thermodynamic theory of polymer elasticity — Reptation theory — Polymer field theory — Møller – Plesset perturbation theory — Density Functional Theory — Frontier molecular orbital theory — Polyhedral skeletal electron pair theory — Baeyer strain theory — Quantum theory of atoms in molecules — Collision theory — Ligand field theory ( successor to Crystal field theory ) — Variational Transition State Theory — Benson group increment theory — Specific ion interaction theory

Bonding diagram of diborane ( B < sub > 2 </ sub > H < sub > 6 </ sub >) showing with curved lines a pair of three-center two-electron bond s, each of which consists of a pair of electrons bonding three atoms, two boron atoms and a hydrogen atom in the middle.

In an ordinary covalent bond a pair of electrons bonds two atoms together, one at either end of the bond, the diboare B-H bonds for example at the left and right in the illustrations.

In three-center two-electron bond a pair of electrons bonds three atoms ( a boron atom at either end and a hydrogen atom in the middle ), the diborane B-H-B bonds for example at the top and bottom of the illustrations.

The mechanism involves a pair of electrons from the carbonyl group double bond transferring to the oxygen atom, leaving it single bonded to carbon and giving the oxygen atom a negative charge.

Nine years old but mature beyond their years due to their also being pre-born, the pair maneuver around the ever-increasing machinations of their aunt Alia, who is slowly but surely succumbing to Abomination.

18, 000 spectators attended the final day's play as the pair slowly accumulated runs, before a juggling catch dismissed Thomson three runs short of the target.

Each flying ship is equipped with a pair of large power stones on either side, which rotate slowly as the ship moves.

If one pair is slowly rotated, the amount of light that gets through is observed to decrease until the two lenses are at right angles to each other, when no light gets through.

The Kenyan pair reached the final water jump side by side, but then Keter slowly edged ahead to win the gold medal by 1. 11 seconds.

Faced with the threat of prison, the pair fix the village headmans teeth, but they operate the drill “ slowly.

While Larry and Jennifer's romance blossomed, Balki and Mary Anne's relationship moved more slowly: the pair would get very close, but then back off after fleeting moments of passion, then drift back into affection.

* In the Flintstones episode " Fred's New Boss " ( season three ), Wilma Flintstone and Betty Rubble get their hair done in gigantic, elaborate beehives at a salon, and the pair drive their car very slowly to protect their hairdos.

While Sri Lankan batsmen Kumar Sangakkara and Sanath Jayasuriya were adding 116 for the second wicket, the contest was alive, but after the pair got out, Sri Lanka's chances slowly washed way.

The pair went on to form Arcades in 2000, slowly working towards their album Who's Most Lost?

Shelley Peiken was the writer behind " What a Girl Wants ", initially Peiken's success was established slowly and any success she did enjoy wasn't prominent in the music industry until she met songwriter Guy Roche after he had moved to Los Angeles with Peiken's manager suggesting the pair should work together.

Crabs carried a pair of bins filled with powdered chalk that slowly trickled out to mark the edges of the safe route.