Sciencemadness Discussion Board

Order of Lsting Nonmetal Elements in a Chemical Formul

Yttrium2 - 27-11-2015 at 11:39

C P N H S I Br Cl O F

so for CF2Cl2, how come the Fluorine is listed before the chlorine?

Why wouldn't the molecular formula be CCl2F2?

DraconicAcid - 27-11-2015 at 11:48

Most chemists will write it either way. The order you've written is mostly important for binary compounds- it's chlorine monofluoride, never fluorine monochloride.

Yttrium2 - 27-11-2015 at 11:52

Quote: Originally posted by DraconicAcid  
Most chemists will write it either way. The order you've written is mostly important for binary compounds- it's chlorine monofluoride, never fluorine monochloride.



Which Order are you referring to?
but there is a carbon? Not only this but there are two Cl's and two F's, so wouldn't it be dichloride,difluoride or something like that? Or diFluoride,diChloride?


Can someone elaborate on this?

[Edited on 11/27/2015 by Yttrium2]

[Edited on 11/27/2015 by Yttrium2]

DraconicAcid - 27-11-2015 at 12:05

I'm referring to the order you've written: C P N H S I Br Cl O F

I was using ClF as an example, not trying to rename dichlorodifluoromethane.

A compound of iodine and oxygen will be an iodine oxide. A compound of sulphur and iodine will be a sulphur iodide. An organic compound containing carbon, sulphur and iodine will follow organic nomenclature.