These data lead to a structure in which sheets of Cr atoms lie between two sheets of O atoms.

The O atoms in each sheet are close packed and each Cr atom is surrounded by a distorted octahedron of O atoms.

The aldohexose D-glucose, for example, has the formula ( C · H < sub > 2 </ sub > O ) < sub > 6 </ sub >, of which all but two of its six carbons atoms are stereogenic, making D-glucose one of 2 < sup > 4 </ sup > = 16 possible stereoisomers.

For instance, in ideally bonded amorphous silica all Si atoms have 4 bonds to O atoms and all O atoms have 2 bonds to Si atom.

If a diatomic molecule consists of two atoms of the same element, such as H < sub > 2 </ sub > and O < sub > 2 </ sub >, then it is said to be homonuclear, but otherwise it is heteronuclear.

No long range order is present, however there is local ordering with respect to the tetrahedral arrangement of oxygen ( O ) atoms around the silicon ( Si ) atoms.

It features a carbonyl group ( C = O ) bonded to two other carbon atoms.

A molecule may consist of atoms of a single chemical element, as with oxygen ( O < sub > 2 </ sub >), or of different elements, as with water ( H < sub > 2 </ sub > O ).

Rowland and Molina then proposed that these chlorine atoms might be expected to cause the breakdown of large amounts of ozone ( O < sub > 3 </ sub >) in the stratosphere.

Simple monosaccharides have a linear and unbranched carbon trolololo with one carbonyl ( C = O ) functional group, and one hydroxyl ( OH ) group on each of the remaining carbon atoms.

Ozone in the Earth's stratosphere is created by ultraviolet light striking oxygen molecules containing two oxygen atoms ( O < sub > 2 </ sub >), splitting them into individual oxygen atoms ( atomic oxygen ); the atomic oxygen then combines with unbroken O < sub > 2 </ sub > to create ozone, O < sub > 3 </ sub >.

It has controversially been argued by some evolutionary scientists such as E. O. Wilson that natural selection can act at the level of non-kin groups to produce adaptations that benefit a non-kin group even if these adaptions are detrimental at the individual level.

The Arrhenius definition states that acids are substances which increase the concentration of hydronium ions ( H < sub > 3 </ sub > O < sup >+</ sup >) in solution.

In pure water the majority of molecules exist as H < sub > 2 </ sub > O, but a small number of molecules are constantly dissociating and re-associating.

Only a limited number of actinium compounds are known including AcF < sub > 3 </ sub >, AcCl < sub > 3 </ sub >, AcBr < sub > 3 </ sub >, AcOF, AcOCl, AcOBr, Ac < sub > 2 </ sub > S < sub > 3 </ sub >, Ac < sub > 2 </ sub > O < sub > 3 </ sub > and AcPO < sub > 4 </ sub >.

For, the letters associated with those numbers are K, L, M, N, O, ..., respectively.

Anagrams are also often used in fiction for character aliases, such as Tom Marvolo Riddle = I am Lord Voldemort, Leonardo da vinci = O Draconian Devil, The Mona Lisa

Closely related and even more numerous are amides derived from primary amines ( R ' NH < sub > 2 </ sub >) with the formula RC ( O ) NHR '.

Amides are also commonly derived from secondary amines ( R ' RNH ) with the formula RC ( O ) NR ' R.

* 1848 – Camila O ' Gorman and Ladislao Gutierrez are executed on the orders of Argentine dictator Juan Manuel de Rosas.

: there are no voices, O Rhodopè, that are not soon mute, however tuneful:

It is now known that each of the A, B, and O alleles is actually a class of multiple alleles with different DNA sequences that produce proteins with identical properties: more than 70 alleles are known at the ABO locus.

Most diplomatic missions are located in the suburbs of Yarralumla, Deakin and O ' Malley.

AVL trees are often compared with red-black trees because they support the same set of operations and because red-black trees also take O ( log n ) time for the basic operations.

The operations to balance the trees are different, but both occur in O ( log n ) time.

Athanasius the bishop of Alexandria wrote about the connections between the Ark and the Virgin Mary: " O noble Virgin, truly you are greater than any other greatness.

You are greater than them all O ( Ark of the ) Covenant, clothed with purity instead of gold!

Big O notation, omega notation and theta notation are used to this end.

It is known locally as the ' Round O ', and from this tradition inhabitants of Arbroath are colloquially known as ' Reid Lichties ' ( Scots reid = red ).

All rays which issue from O and pass through the aperture stop also pass through the entrance and exit pupils, since these are images of the aperture stop.

These aberrations are avoided if, according to Abbe, the sine condition, sin u ' 1 / sin u1 = sin u ' 2 / sin u2, holds for all rays reproducing the point O.

If the object point O is infinitely distant, u1 and u2 are to be replaced by h1 and h2, the perpendicular heights of incidence ; the sine condition then becomes sin u ' 1 / h1 = sin u ' 2 / h2.

We receive, therefore, in no single intercepting plane behind the system, as, for example, a focusing screen, an image of the object point ; on the other hand, in each of two planes lines O ' and O " are separately formed ( in neighboring planes ellipses are formed ), and in a plane between O ' and O " a circle of least confusion.

I would not want to be one of those writers who begin each morning by exclaiming, `` O Gogol, O Chekhov, O Thackeray and Dickens, what would you have made of a bomb shelter ornamented with four plaster-of-Paris ducks, a birdbath, and three composition gnomes with long beards and red mobcaps ''??

Cathode: 2 H < sub > 2 </ sub > O ( l ) + 2 e < sup >–</ sup > → H < sub > 2 </ sub >( g ) + 2 OH < sup >–</ sup >( aq ) E °< sub > red </ sub >

Anode: 2 H < sub > 2 </ sub > O ( l ) → O < sub > 2 </ sub >( g ) + 4 H < sup >+</ sup >( aq ) + 4 e < sup >–</ sup > E °< sub > red </ sub > =

* Justus O ' Peace: This recurring skit featured Archie Campbell as a judge who wore what looked to be a bowler hat, a red undershirt, and suspenders sentencing people to long jail time for some of the most silly misdemeanor " crimes ".

He eliminates Woolton by a prolonged scheme: At the party conferences, Urquhart pressures O ' Neill into persuading his personal assistant and lover, Penny Guy, to have sex with Woolton in his suite, with the encounter recorded through a bugged ministerial red box.

When ordered by temperature and when duplicate classes were removed, the spectral types of stars followed, in order of decreasing temperature with colors ranging from blue to red, the sequence O, B, A, F, G, K and M. ( A popular mnemonic for memorizing this sequence of stellar classes is " Oh Be A Fine Girl / Guy, Kiss Me ".

The main road into major towns would therefore become a sea of orange or red neon proclaiming < span style =" color: orange ;"> VACANCY </ span > ( and later < span style =" color: red ;"> C </ span >< span style =" color: blue ;"> O </ span >< span style =" color: orange ;"> L </ span >< span style =" color: purple ;"> O </ span >< span style =" color: cyan ;"> U </ span >< span style =" color: brown ;"> R </ span > TV, air conditioning or a pool ) as competing operators vied for precious visibility on crowded highways.

Colour coding: phosphorus | P ( orange ); oxygen | O ( red ); hydrogen | H ( white ).

The persistent version of red – black trees requires O ( log n ) space for each insertion or deletion, in addition to time.

Restoring the red – black properties requires a small number ( O ( log n ) or amortized O ( 1 )) of color changes ( which are very quick in practice ) and no more than three tree rotations ( two for insertion ).

According to informal tradition, O stars are called " blue ", B " blue-white ", A stars " white ", F stars " yellow-white ", G stars " yellow ", K stars " orange ", and M stars " red ", even though the actual star colors perceived by an observer may deviate from these colors depending on visual conditions and individual stars observed.

The Cu < sup > 2 +</ sup > complex ions are reduced to a red brick coloured Cu < sub > 2 </ sub > O precipitate.

Frimy and Auguste Verneuil manufactured artificial ruby by fusing BaF < sub > 2 </ sub > and Al < sub > 2 </ sub > O < sub > 3 </ sub > with a little Chromium at red heat.

The δ < sup > 18 </ sup > O of coraline red algae provides a useful proxy of sea surface temperature at high latitudes, where many traditional techniques are limited.

This map shows the location of the majority of the Tohono O ' odham Nation in Pima County, Arizona | Pima County, highlighting the large Tohono O ' odham Reservation as well as the smaller San Xavier Reservation in red.