anybody can tell me about carbonhydrogen?
in 900to 1000 words this question make me in trouble dear friend
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Carbon (from Latin: carbo "coal") is a chemical element with the symbol C and atomic number 6. It is nonmetallic and tetravalent—making four electrons available to form covalent chemical bonds. It belongs to group 14 of the periodic table.Carbon makes up only about 0.025 percent of Earth's crust. Three isotopes occur naturally, 12C and 13C being stable, while 14C is a radionuclide, decaying with a half-life of about 5,730 years.Carbon is one of the few elements known since anticent
Carbon is the 15th most abundant element in the Earth's crust, and the fourth most abundant element in the universe by mass after hydrogen, helium, and oxygen. Carbon's abundance, its unique diversity of organic compounds, and its unusual ability to form polymers at the temperatures commonly encountered on Earth enables this element to serve as a common element of all known life. It is the second most abundant element in the human body by mass (about 18.5%) after oxygen.
The atoms of carbon can bond together in diverse ways, resulting in various allotropes of carbon. The best known allotropes are graphite, diamond, and buckminsterfullerene.[18] The physical properties of carbon vary widely with the allotropic form. For example, graphite is opaque and black while diamond is highly transparent. Graphite is soft enough to form a streak on paper while diamond is the hardest naturally occurring material known. Graphite is a good electrical conductor while diamond has a low electrical conductivity. Under normal conditions, diamond, carbon nanotubes, and graphene have the highest thermal conductivities of all known materials. All carbon allotropes are solids under normal conditions, with graphite being the most thermodynamically stable form at standard temperature and pressure. They are chemically resistant and require high temperature to react even with oxygen.
The most common oxidation state of carbon in inorganic compounds is +4, while +2 is found in carbon monoxide and transition metal carbonyl complexes. The largest sources of inorganic carbon are limestones, dolomites and carbon dioxide, but significant quantities occur in organic deposits of coal, peat, oil, and methane clathrates. Carbon forms a vast number of compounds, more than any other element, with almost ten million compounds described to date, and yet that number is but a fraction of the number of theoretically possible compounds under standard conditions. For this reason, carbon has often been referred to as the "king of the elements"
Introduction to Carbohydrates:
A carbohydrate is generally defined as a neutral compound made up of carbon, hydrogen and oxygen, the last two elements remaining in the same proportion as in water.
The general formula is Cn(H2O)n. But there may be exceptions. For instance, rhamnose (C6H12O5) is a carbohydrate in which H and O remain in a different proportion. Also there are certain other compounds, such as formaldehyde (HCHO), acetic acid (CH3COOH), lactic acid (CH3CHOHCOOH), etc., which have got the same empirical formula but are not carbohydrates. Thus chemically, carbohydrates can be defined as the aldehyde and ketone derivative of higher polyhydric alcohol (having more than one ‘OH’ group).
Functional Importance of Carbohydrates:
i. It is the readily available fuel of the body.
ii. It also constitutes the structural material of the organism.
iii. It also acts as important storage of food material of the organism.
iv. Carbohydrate also plays a key role in the metabolism of amino acids and fatty acids.
End products of carbohydrate digestion are all monosaccharides, such as glucose, laevulose, galactose, xylose, mannose, arabinose, etc. It is in this form that carbohydrates are absorbed. It is believed that little quantities of disaccharides may also be absorbed, but the still higher forms are not absorbed at all.
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