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Iodine is a chemical element with symbol I and atomic number 53. The name is from Greek ἰοειδής ioeidēs, meaning violet or purple, due to the color of iodine ...

Which element produces a violet vapor with an extremely ...


Heating a white substance produces a vapor and black material Was the ... What element when burned produces a violet vapor with an unpleasant odor? iodine.

Iodine, Chemical Element - reaction, water, uses, elements, proteins ...


The periodic table is a chart that shows how chemical elements are related to ... He was amazed to see clouds of beautiful violet vapor rising from the mixture. ... Radioactive isotopes are produced when very small particles are fired at atoms.

Halogen elements Facts, information, pictures | Encyclopedia.com ...


Get information, facts, and pictures about Halogen elements at ... to collect potassium nitrate when he noticed that a beautiful violet vapor was produced. When ...

Group VIIA: Halogens | ChemPaths

chempaths.chemeddl.org/services/chempaths/?q=book/General Chemistry Textbook/Chemistry of the Representative Elements/1453/group-viia-halogens

Dec 16, 2010 ... Fluorine, the most electronegative element, has no positive oxidation states, but the ... heated, sublimes (changes directly from solid to gas) to a beautiful violet vapor. All the gases produce a choking sensation when inhaled.

"Solid iodine, contaminated with salt, was heated until the iodine ...


The violet vapor of iodine was then cooled to yield the pure solid. ... "A sample of mercury(II) oxide was heated to produce mercury metal and oxygen gas.

iodine (I) | chemical element | Britannica.com


Dec 30, 2015 ... I chemical element, a member of the halogen elements, or Group 17 (Group ... History In 1811 the French chemist Bernard Courtois obtained a violet vapour... ... of iodine in the presence of starch produce a blue-black colour.

Iodine - Chemicool


Iodine Element Facts. Data Zone ... Color: bluish-black solid, purple vapor ... This, rather surprisingly, produced a purple vapor, which condensed into dark crystals. ... Iodine's name comes from the Greek work 'iodes' meaning violet.

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Feb 2, 2009 ... discovery of a new element that is now known to us as iodine. ... substance appeared as a vapor of beautiful violet color and con- densed as black ... concentrated, so as to produce much heat, the substance ap- pears as a ...

Gas Discharge Tubes - Chemical Education


Hydrodgen, Blue-violet. 2. ... Mercury Vapor, Blue-violet. 8. ... These colors can be used to produce atomic emmision spectra of the elements electrically excited.

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What element when burned produces a violet vapor with an ...


What element when burned produces a violet vapor with an unpleasant odor? ... produces a vapor and black material Was the substance an element or a ...

Violet Smoke Chemistry Demonstration - About.com


As you might have guessed, the violet color comes from iodine vapor. Iodine is corrosive in solid and vapor form and may produce chemical burns, so wear ...

Flame Test Colors - Chemistry Geek


Na+ Yellow. K+ Violet. Ca2+ Orange-red. Sr2+ Red. Ba2+ Green. Cu2+ Blue- green .... Cr2O72- Orange. Cu(NH3)42+ Dark Blue; produced when ammonia is added to Cu2+ solutions ... Transition element ions with partially filled d orbitals tend to release colored light. ... I2 Dark-violet vapor & dark metallic looking solid.