Bell ringer- Name or generate formulas for the following: GeS2 Scandium nitride CaO Vanadium (V) ferrocyanide

Covalent Bonds Nomenclature

Covalents watch until 11:25 mark

BrightStorm Covalent naming

Bellringer Identify the following as ionic or covalent- Dihydrogen monoxide MgCl2 Germanium Carbide Sodium chloride CH4 Cl2

Steps to naming Covalents Id metal, nonmetal (must not have a metal) Write out element names, drop the ending off second one and replace with –ide Count how many of each element you have. 4. Place the prefix that corresponds to the number in front of the element name.

Special notes- Don’t ever simplify covalents When using tetra or penta with an oxide drop the –a and just use -tetr or –pent When using mono- with an oxide drop the –o and just use mon- Don’t use mono- on the first word

List of prefixes- # of elements prefix Prefix 1 mono 6 hexa 2 di 7 hepta 3 tri 8 octa 4 tetra 9 nona 5 penta 10 deca

Dinitrogen tetrafluoride Formula N2F4 SiCl4 ClF3 SiO2 Dinitrogen tetrafluoride Silicon tetrachloride Chlorine trifluoride Silicon dioxide

Covalent naming

Steps to writing covalent formulas Id metal, nonmetal (must not have a metal) Write out symbols. Read prefix, place corresponding number in the subscript position. If it is a mono-, leave blank don’t write the one. Don’t simplify!

Carbon dioxide CO2 Phosphorous triiodide PI3 Sulfur dichloride SCl2 Nitrogen trifluoride NF3 Dioxygen difluoride O2F2

Now it’s your turn. On the Nomenclature Worksheet, complete all problems.