from The Century Dictionary.
- noun An iodide with the maximum proportion of iodine, as potassium periodide, KI3.
from the GNU version of the Collaborative International Dictionary of English.
- noun An iodide containing a higher proportion of iodine than any other iodide of the same substance or series.
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun chemistry An
iodidecontaining a higher proportionof iodinethan any other iodide of the same substanceor series.
from Wiktionary, Creative Commons Attribution/Share-Alike License
_Mercury_, periodide of, an exception to the law of conduction?
I was unable to contrast it with the protiodide, the latter being converted into mercury and periodide by heat.
The protiodide of tin is decomposed when fluid (402.); the periodide is not (405.).
The periodide of mercury when fused is not decomposed (691.), even though it does conduct.
I incline, however, to believe, that a portion of protiodide of mercury is retained dissolved in the periodide, and that to its slow decomposition the feeble conducting power is due.
Even when a little of the protiodide and iodine are merely rubbed together in a mortar, a portion of the periodide is formed.
[A] With regard to perchloride and periodide of mercury, see now 1340,
A similar experiment was then made with iodide of lead, and in this manner all confusion from the formation of a periodide avoided (803.).
_Iodides_ of potassium, zinc and lead, protiodide of tin, periodide of mercury; _fluoride_ of potassium; _cyanide_ of potassium; _sulpho-cyanide_ of potassium.
This I attribute to the formation of a periodide at the positive electrode, which, dissolving in the mass of liquid iodide, came in contact with the lead evolved at the negative electrode, and dissolved part of it, becoming itself again protiodide.