Iodine is a chemical element with symbol I and atomic number 53. The name is
from Greek ἰοειδής ioeidēs, meaning violet or purple, referring to the color of
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.
Here are two ways to produce violet smoke for a colorful chemistry demonstration
involving the element iodine. ... Produce Clouds of Violet Smoke. Iodine vapor
produces the violet color of the smoke. - (c) Philip Evans. Iodine vapor produces ...
After the process, the various Sulphur compounds produced during ... added
excess sulphuric acid resulting in a violet vapor cloud that condensed on colder ...
chempaths.chemeddl.org/services/chempaths/?q=book/General Chemistry Textbook/The Structure of Atoms/1211/groups-related-elements&title=CoreChem:Group_VIIA:_Halogens
Dec 8, 2010 ... All the gases produce a choking sensation when inhaled. ... of the horse by the
great clouds of violet iodine vapor which sublimed as a result of ...
... element belonging to Group VIIb (i.e. the Halogen Group of elements) of the ...
contain iodide salts, with sulphuric acid to produce a vapour with a violet colour.
Aug 16, 2013 ... ... the element iodine, from the Greek word iodes, which means purple or violet. ...
Physiologically, iodine is an essential element, required for the ... and iodine
react to produce spectacular clouds of purple iodine vapour.
It sublimes easily to produce a beautiful purple vapor. Beads in ampoule. Be sure
to watch the video associated with this element. You can see ... The most obvious
effect is the generation of a cloud of beautiful violet vapor. But if you watch ...
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 ...