ICLCS Monday, June 25, 2007 ©2011 University of Illinois Board of Trustees .

Nomenclature 3DNomenclature 3D

ICLCSICLCS

Monday, June 25, 2007Monday, June 25, 2007

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Binary CovalentBinary Covalent

Naming covalent compounds, non-Naming covalent compounds, non-metal and non-metal elements. metal and non-metal elements. Yellow and Yellow and

Green elements.Green elements.

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Binary CovalentBinary Covalent More electronegative element is treated More electronegative element is treated

as if it is an anion and has an –ide suffix. as if it is an anion and has an –ide suffix. (Ending)(Ending)

First element is named as if it is an First element is named as if it is an element.element.

Prefix is added to state the number of Prefix is added to state the number of elements present. For first element, one is elements present. For first element, one is understood.understood.

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Binary CovalentBinary Covalent

Mono-Mono- Carbon monoxide (CO)Carbon monoxide (CO)

Di-Di- Carbon dioxide (COCarbon dioxide (CO22))

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Binary CovalentBinary Covalent

Tri-Tri- Iodine trichloride (IClIodine trichloride (ICl33))

Tetra-Tetra- Carbon tetrachloride (CClCarbon tetrachloride (CCl44))

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Binary CovalentBinary Covalent

Penta-Penta- Phosphorus pentachloridePhosphorus pentachloride

(PCl(PCl55))

Hexa-Hexa- Silicon hexaboride Silicon hexaboride

(SiB(SiB66))

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Binary CovalentBinary Covalent

What is the name forWhat is the name forPP22II44??

Diphosphorus tetraiodideDiphosphorus tetraiodide©2011 University of Illinois Board of

Trustees • http://islcs.ncsa.illinois.edu/copyright