number (redirected from oxidation number)

number /num·ber/ (num´ber) a symbol, as a figure or word, expressive of a certain value or a specified quantity determined by count.

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atomic number  (Z ) a number expressive of the number of protons in an atomic nucleus.

Avogadro's number  (N ) (N A) the number of molecules in one mole of a substance: 6.023 × 1023.

mass number  (A ) the number expressive of the mass of a nucleus, being the total number of protons and neutrons in the nucleus of an atom or nuclide.

oxidation number  a number assigned to each atom in a molecule or ion that represents the number of electrons theoretically lost (negative numbers) or gained (positive numbers) in converting the atom to the elemental form (which has an oxidation number of zero). The sum of the oxidation numbers for all atoms in a neutral compound is zero; for polyatomic ions, it is equal to the ionic charge.

tooth number  a number assigned for each of the permanent teeth in consecutive order, with 1 for the upper right third molar and 17 for the lower left third molar, and proceeding around each jaw.

turnover number  the number of molecules of substrate acted upon by one molecule of enzyme per minute.

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num·ber (nmbr)

n.

1. A symbol expressive of a certain value or of a specific quantity determined by count.

2. The place of any unit in a series.

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number

a symbol, as a figure or word, expressive of a certain value or a specified quantity determined by count.

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atomic number

a number expressive of the number of protons in an atomic nucleus, or the positive charge of the nucleus expressed in terms of the electronic charge; symbol A.

Avogadro's number

see avogadro's number.

mass number

see mass number.

Reynold's number

see reynold's number.

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number

Vox populi A symbol of a value. See Accession number, Burst number, CLIA number, Common account number, Copy number, ID number, Linkage number, Magic number, Mass number, Medicare Indentification number, IP number, MIM number, Primary accession number, Reynolds' number, Secondary accession number, Threshold number, UPIN number, Winding number, Writhe number.

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Patient discussion about oxidation number.

Q. i have heard that number of scientists found out in one of there researches that breasts Cancer is capable to just disappear with out a treatment , have any one read this article/research ? or maybe just heard about it ? because it is interesting why and how this result happens ...

A. here is an article explaining the research:
http://news.yahoo.com/s/nm/20081124/hl_nm/us_breast_cancers_disappear

and here is the article itself:
http://archinte.ama-assn.org/cgi/content/abstract/168/21/2311?ijkey=a878a40b39f08b39d34f7f9d601043ea623e5120&keytype2=tf_ipsecsha

but before avoiding treatment- remember that most breast cancer don't just disappear and kill the person that has it.

Q. What is the statistic number of women having breast cancer or under the threat of having breast cancer? where would i find a good , and reliable info about the disease ?

A. it is said that today 1 out of any 8 women will have breast cancer. there are also men who has breast cancer but the numbers are considerably lower.
about a good source of info- the site that doctoradhi gave you is pretty good, and you can use also the national medical library link:
http://www.nlm.nih.gov/medlineplus/breastcancer.html#cat22

good luck!

Q. What are the percentage of people dealing with breast cancer out of the number of people that are illness with cancer ? and what is the percentage of death cases out of sum of all cases of breast cases ? is there any difference between the amount of death cases from breast cancer and than the other kinds of cancer ?

A. here's a quote from the CDC site:
"Aside from non-melanoma skin cancer, breast cancer is the most common form of cancer in women. Breast cancer is the number one cause of cancer death in Hispanic women. It is the second most common cause of cancer death in white, black, Asian/Pacific Islander, and American Indian/Alaska Native women."