Naming Covalent Compounds - copesclasses.weebly.com

Naming Covalent Compounds - copesclasses.weebly.com

FIRST! Lets look at metals, non-metals and metalloids Alkali Metals Alkaline Earth Metals Transition Metals Basic Metals Separation Line If it touches the line, it is a metalloid, except for Al, At and Uus

Lanthanide Actinide Halogens Metalloids Nonmetals Noble Gases NAMING COVALENT COMPOUNDS IONIC VS. COVALENT Ionic Bond Bond between a metal and a non-metal. Must have anion, and cation!

Covalent Bond Made of two anions (2 nonmetals or 1 nonmetal & 1 polyatomic ion) WRITING COVALENT COMPOUNDS Identify the less electronegative element 1st (trend = less EN is the one farthest left & farthest down on Periodic Table) The 1st nonmetal is just given the name as found on the Periodic Table (just like ionic) The 2nd nonmetal ending is changed to ide (just like ionicdont change polyatomics) Difference = numerical prefixes are used to express how many of each nonmetal are present WRITING COVALENT COMPOUNDS (CONT.) You never use criss-cross method

The only time you do not use a prefix is when there is only one of the first nonmetal. Number Prefix 1 Mono 2 Di 3 Tri

4 Tetra 5 Penta 6 Hexa 7 Hepta 8

Octa 9 Nona 10 Deca COVALENT COMPOUND PRACTICE SO2 N2O NO2 CCl4 Cl2O7 PCl3 SF6 Si3N4

N(BrO3)5 H2O Sulfur Dioxide Dinitrogen Monoxide Nitrogen Dioxide Carbon Tetrachloride Dichlorine Heptaoxide Phosphorus Trichloride Sulfur Hexaflouride Trisilicon Tetranitride Nitrogen Pentabromate Dihydrogen Monoxide COVALENT COMPOUND PRACTICE Phosphorus Trioxide Dinitrogen Pentacarbide Tellurium Noniodide Carbon Monoxide

Selenium Heptaflouride Tetraphosphorous Decoxide Arsenic Hexabromide Silicon Dichloride PO3 N2C5 TeI9 CO SeF7 P4O10 AsBr6 SiCl2

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