Inorganic Chemistry Test

Chromium(II) chloride is the chemical compound with the formula CrCl₂. This white, crystalline solid is used for the synthesis of other chromium complexes. CrCl₂ is hygroscopic.It is used as a precursor to other inorganic and organometallic chromium complexes. Alkyl halides and nitroaromatics are reduced by CrCl₂.

Cobalt (II) carbonate is the inorganic compound with the formula CoCO₃. This reddish paramagnetic solid is an intermediate in the hydrometallurgical purification of cobalt from its ores, as an inorganic pigment and as a precursor to catalysts.

Cyanogen is the chemical compound with the formula (CN)₂. It is a colourless, toxic gas with a pungent odour. The molecule is a pseudohalogen. Cyanogen molecules consist of two CN groups — analogous to diatomic halogen molecules, such as Cl₂, but far less oxidizing.

Copper(II) carbonate is a blue-green compound (chemical formula CuCO₃) forming part of the verdigris patina that is found on weathered brass, bronze and copper.

Disilane is a chemical compound with chemical formula H₆Si₂. It is the only two silicon silane that is an aliphatic hydrosilicon. At standard temperature and pressure, disilane is a colourless, acrid gas. Disilane and ethane have similar structures, although disilane is much more reactive.

Hydrazoic acid is a colourless, volatile, and extremely explosive liquid at room temperature and pressure. It is a compound of nitrogen and hydrogen, having chemical formula HN₃.It is used primarily for preservation of stock solutions, and as a reagent.

Gold fluoride is the inorganic compound with the formula Au₂F₁₀. This fluoride compound features gold in its highest known oxidation state. This red solid dissolves in hydrogen fluoride but these solutions decompose, liberating fluorine.

Copper(I) oxide or cuprous oxide is the inorganic compound with the formula Cu₂O. It is one of the principal oxides of copper. This red-coloured solid is a component of antifouling paints.

Cisplatin, is a chemotherapy drug. It is used to treat various types of cancers, including sarcomas, some carcinomas (e.g., small cell lung cancer, and ovarian cancer), lymphomas, and germ cell tumors.

All can be used as semiconductor materials.

Boron carbide is an extremely hard boron-carbon ceramic material used in tank armour, bulletproof vests, and numerous industrial applications. With a Mohs hardness of above 9, it is one of the hardest materials known, behind cubic boron nitride and diamond.

Antimony pentafluoride is the inorganic compound with the formula SbF₅. This colourless, viscous liquid is a valuable Lewis acid and a component of the superacid fluoroantimonic acid, the strongest known acid. It is notable for its Lewis acidity and its ability to react with almost all known compounds.

Ammonium hydroxide is a solution of ammonia in water. It can be denoted by the symbols NH₃(aq). Although the name ammonium hydroxide suggests a base with composition [NH⁴⁺][OH⁻], it is actually impossible to isolate samples of NH₄OH. These ions only comprise a tiny fraction of ammonia.

Hydrochloric acid is a solution of hydrogen chloride (HCl) in water, that is a highly corrosive, strong mineral acid with many industrial uses. It is found naturally in gastric acid.

Gold(I, III) chloride is a black solid with chemical formula Au₄Cl₈ that contains gold in two different oxidation states - +1 and +3. It is a photosensitive solid and should be kept away from light and stored in dark-coloured containers.

Hydrogen sulfide is a colourless, very poisonous, flammable gas with the characteristic foul odour of rotten eggs at concentrations up to 100 parts per million. It often results from the bacterial breakdown of organic matter in the absence of oxygen, such as in swamps and sewers.

Hydrogen peroxide (H₂O₂) is an oxidizer commonly used as a bleach. It is the simplest peroxide. Hydrogen peroxide is a clear liquid, slightly more viscous than water, that appears colourless in dilute solution. It is used as a disinfectant, antiseptic, oxidizer, and in rocketry as a propellant.

Indium arsenide is a semiconductor material. It has the appearance of grey cubic crystals with a melting point 942 °C. Indium arsenide is used for construction of infrared detectors, for the wavelength range of 1-3.8 µm. The detectors are usually photovoltaic photodiodes.

Iodine heptafluoride is the compound IF7. It has an unusual pentagonal bipyramidal structure, as predicted by VSEPR theory. The molecule can undergo a pseudorotational rearrangement called the Bartell mechanism, which is like the Berry mechanism but for a hepta coordinated system.

Germanium tetrachloride is a colourless liquid used as an intermediate in the production of purified germanium metal. In recent years the usage of GeCl₄ has increased substantially due to its use as a reagent for fibre optic production.

Gallium arsenide (GaAs) is a compound of the elements gallium and arsenic. It is a III/V semiconductor, and is used in the manufacture of devices such as microwave frequency integrated circuits, monolithic microwave integrated circuits, infrared light-emitting diodes, laser diodes, solar cells and optical windows.

Erbium (III) chloride, the erbium (III) salt of hydrochloric acid, is a violet solid used for the preparation of erbium metal.

Chrome alum, KCr(SO₄)₂·12H₂O is a dark violet crystalline double sulfate of chromium and potassium. It is used in tanning.

Germane is the chemical compound with the formula GeH4, and the germanium analogue of methane. It is the simplest germanium hydride and one of the most useful compounds of germanium. It is tetrahedral. It burns in air to produce GeO2 and water.

Diborane is a colourless gas at room temperature with a repulsively sweet odour. Diborane mixes well with air, easily forming explosive mixtures. Diborane will ignite spontaneously in moist air at room temperature.