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How many carbons are in a glucose ring?

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Well, this answer can be easily obtained from google or a standard organic chemistry textbook. But as the OP trusts Quora more, here is my answer: Glucose is a hexose (containing six carbon atoms), with 5 carbon atoms in a six membered ring and 1 carbon outside the ring (CH2OH at C5). read more

The carbon atoms in the glucose ring each have four covalent bonds. The best, or optimum angle, between all these bonds is 109.5 o, which results in a perfect tetrahedron. If, for any reason, these bonds are forced into greater, or smaller angles then the molecule will be strained or stressed, and be much less stable. read more

alpha glucose beta glucose In alpha glucose the -H group of the rightmost Carbon atom (C1) is above the plane of the ring, whereas it projects below the ring in beta glucose. There are in fact 3 versions of the ring structure called chairs and boat, depending on the bending in or out of the left and right corners, but it is easier to draw it as a flat hexagon. read more

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