Arsenic and its compounds, especially the trioxide, are used in the production of pesticides ( treated wood products ), herbicides, and insecticides.

For some time, China has been the largest producer of antimony and its compounds, with most production coming from the Xikuangshan Mine in Hunan.

As with most lanthanides and actinides, actinium assumes oxidation state + 3 in nearly all its chemical compounds.

The crystal lattice of solid americium and its compounds contains intrinsic defects, which are induced by self-irradiation with alpha particles and accumulate with time ; this results in a drift of some material properties.

Numerous studies have examined health effects linked to Agent Orange, its component compounds, and its manufacturing byproducts.

Boron is concentrated on Earth by the water-solubility of its more common naturally occurring compounds, the borate minerals.

This gradual transformation is an important consideration when studying the properties of elemental berkelium and its chemical compounds, since the formation of californium brings not only chemical contamination, but also self-radiation damage, and self-heating from the emitted alpha particles.

The later discovery of Friedrich Wöhler that many natural substances, organic compounds, can indeed be synthesized in a chemistry laboratory also helped the modern chemistry to mature from its infancy.

The uses of carbon and its compounds are extremely varied.

Either in its pure forms, or in various chemical compounds or mixtures, almost every element has at least one important human use.

The name of the element is derived from the Greek word " chrōma " ( χρώμα ), meaning colour, because many of its compounds are intensely coloured.

Like zinc, it prefers oxidation state + 2 in most of its compounds and like mercury it shows a low melting point compared to transition metals.

Even though cadmium and its compounds may be toxic in certain forms and concentrations, the British Pharmaceutical Codex from 1907 states that cadmium iodide was used as a medication to treat " enlarged joints, scrofulous glands, and chilblains ".

It forms strongly fluorescent complexes with various organic compounds, but there is no evidence of its incorporation into bacteria and archaea.

The nucleobases are classified into two types: the purines, A and G, being fused five-and six-membered heterocyclic compounds, and the pyrimidines, the six-membered rings C and T. A fifth pyrimidine nucleobase, uracil ( U ), usually takes the place of thymine in RNA and differs from thymine by lacking a methyl group on its ring.

Because dysprosium and its compounds are highly susceptible to magnetization, they are employed in various data storage applications, such as in hard disks.

Archibald Scott Couper in 1858 and Joseph Loschmidt in 1861 suggested possible structures that contained multiple double bonds or multiple rings, but the study of aromatic compounds was in its earliest years, and too little evidence was then available to help chemists decide on any particular structure.

Although the new element somewhat resembled arsenic and antimony in appearance, its combining ratios in the new element's compounds agreed with Mendeleev's predictions for a predicted relative of silicon.

In the great majority of its compounds, Gd adopts the oxidation state + 3.

Its compounds in nature, and in nearly all of its laboratory chemistry, are trivalently oxidized, containing Ho ( III ) ions.

Inorganic compounds show rich variety: A: Diborane features Three-center two-electron bond | unusual bonding B: Caesium chloride has an archetypal crystal structure C: Cyclopentadienyliron dicarbonyl dimer | Fp < sub > 2 </ sub > is an Organometallic chemistry | organometallic complex D: Polydimethylsiloxane | Silicone's uses range from breast implant s to Silly Putty E: Grubbs ' catalyst won the Nobel Prize in Chemistry | 2005 Nobel Prize for Robert H. Grubbs | its discoverer F: Zeolite s find extensive use as molecular sieve s G: Copper ( II ) acetate surprised Theoretical chemistry | theoreticians with its diamagnetism

When studying inorganic compounds, one often encounters parts of the different classes of inorganic chemistry ( an organometallic compound is characterized by its coordination chemistry, and may show interesting solid state properties ).

Among its organometallic compounds is ferrocene, the first sandwich compound discovered.

Indium's current primary application is to form transparent electrodes from indium tin oxide ( ITO ) in liquid crystal displays and touchscreens, and this use largely determines its global mining production.

The traditional superconducting materials for SQUIDs are pure niobium or a lead alloy with 10 % gold or indium, as pure lead is unstable when its temperature is repeatedly changed.

* indium: Indium is commonly used as a deformable gasket material for vacuum seals, especially in cryogenic apparatus, but its low melting point prevents use in baked systems.

Barbier reaction with samarium ( II ) iodideThe Barbier reaction is an organic reaction between an alkyl halide and a carbonyl group as an electrophilic substrate in the presence of magnesium, aluminium, zinc, indium, tin or its salts.

The active sponsor of Jefferson's measure for religious liberty in Virginia, Madison played the most influential single role in the drafting of the Constitution and in securing its ratification in Virginia, founded the first political party in American history, and, as Jefferson's Secretary of State and his successor in the Presidency, guided the nation through the troubled years of our second war with Britain.

All but the most rabid of Confederate flag wavers admit that the Old Southern tradition is defunct in actuality and sigh that its passing was accompanied by the disappearance of many genteel and aristocratic traditions of the reputedly languid ante-bellum way of life.

As long as perception is seen as composed only of isolated sense data, most of the quality and interconnectedness of existence loses its objectivity, becomes an invention of consciousness, and the result is a philosophical scepticism.

Its ontological status is itself most tenuous because apart from individual men, who are its `` matter '', tradition, the `` form '' of society exists only as a shared perception of truth.

One of the most salient features of literary value has been deemed to be its influence upon and organization of emotion.

This understanding, of course, may in its turn take many forms and some of these -- especially those most interesting to the student of comparative literature -- are essentially historical.

Certainly one of the most important comments that can be made upon the spiritual and cultural life of any period of Western civilization during the past sixteen or seventeen centuries has to do with the way in which its leaders have read and interpreted the Bible.

While Thomas' injured back led him to restrain his mount from its most violent gait he moved quickly enough when he had to.

Easily the best known of these three novels is The Space Merchants, a good example of a science-fiction dystopia which extrapolates much more than the impact of science on human life, though its most important warning is in this area, namely as to the use to which discoveries in the behavioral sciences may be put.

The theme of The Walnut Trees Of Altenburg is most closely related to its immediate predecessor in Malraux's array of novels: Man's Hope ( 1937 ).

The most obvious characteristic of contemporary American writing, apart from the beat nonsense, is its cosmopolitanism.

The legislature expended most of its time on the schools and appropriations questions.

We submit that this is a most desirable effect of the law -- and one of its principal aims.

But he painted some of the boldest and most original pictures of his time, and even after nearly half a century, the tense, tormented world he put on canvas has lost none of its fascination.

The most surprising thing about the Twenty-second Congress of the Soviet Communist Party is that it is surprising -- perhaps quite as much, in its own way, as the Twentieth Congress of 1956, which ended with that famous `` secret '' report on Stalin.

Yet an economy cannot get the most out of its resources if dishonesty, corruption, and favoritism are widespread.

Here the New York Central Railroad, one of the Nation's most important carriers, has alone lost 47.6 percent of its passengers since 1949.

To the members of our Advisory Board, and most specially to its members who constitute our committees of selection, the Foundation is indebted for its successes of choice of Fellows.

A true university, like most successful marriages, is a unity of diversities Without forcing all components into a single pattern, the preparation of a master plan is an opportunity to consider interrelation of knowledge at its highest level, which a university -- in contrast to a multiversity -- should stand for.

its principal features should be a product of his most considered judgment.

Among its most spectacular features are its falls, the highest being Upper Yosemite which drops 2,425 feet.

An attempt should be made to see if electricity, in its most latent stage, has any action on the magnet as such ''.

The thermostat is important to get your engine up to operating temperature quickly, and to keep it running at its most efficient temperature through the proper circulation of the coolant.