Some inorganic compounds and organometallic compounds have been quantitatively determined by ultraviolet-visible absorption spectrometry for many years, but the absorption spectra of inorganic compounds and their transition process are far less than that of organic compounds. On the other hand, Inorganic Compound the absorption intensity of inorganic ions is weaker, so their absorption spectra are slow to be used in qualitative and quantitative analysis of inorganic compounds. At present, the main absorption processes of inorganic compounds already known include the F-electron transition between the lanthanide and the actinium of the element ions in the F-orbitals, Inorganic Compound D-electron transitions between the not-filled D-orbitals of the excess metal ions, which are collectively referred to as coordination field transitions, and the charge migration transitions of inorganic compounds.
At present, there are millions of kinds of organic compounds found in nature, but only about 100,000 of them are inorganic. This is because carbon is bonded to carbon atoms through covalent bonding. form a long carbon chain. For example, carbon and hydrogen atoms can form many kinds of hydrocarbons such as methane, ethane, propane, Inorganic Compound and so on. This is one of the main reasons for the wide variety of organic compounds. In all kinds of natural organic matter, they are usually composed of a few elements, in addition to carbon, Inorganic Compound almost always containing hydrogen, often containing oxygen, nitrogen, and some also contain sulfur, phosphorus and so on.
The heterogeneous phenomena in organic matter are very common, but inorganic materials are rare. Many organic compounds have the same chemical and molecular weight, but their physical and chemical properties often vary greatly. For example, the molecular formula of ethanol and dimethyl ether is c2h6o, Inorganic Compound the relative molecular mass is 46.07, but they are two different chemical compounds because the atoms in the molecule are arranged in different order.
The melting point of solid organic matter is not high, generally no more than $number. 2~673.2K. In the presence of air, the vast majority of organic matter can be burned, Inorganic Compound in which carbon is converted into CO2, hydrogen into $literal, and nitrogen into nitrogen.
The covalent bonding property between atoms in organic molecules is obvious. Therefore, most organic matter belongs to Nonelectrolyte, it is insoluble in water and soluble in organic solvents, Inorganic Compound and the reaction between organic matter is often slow and often requires the use of catalysts.
There are many organic compounds with special physiological function, is the life activities in the process of the carrier, components or products, such as enzymes, hormones, vitamins and so on.