Thursday, December 8, 2016

Naming Binary Compounds

Binary Ionic Compounds (Type I)

  1. The cation (positively charged ion; Na+, Al3+) is always named first and the anion (negatively charged ion; Cl-, O2-) second.
  2. A monatomic (meaning one-atom) cation takes its name from the name of the element.  For example, Na+ is called sodium in the names of compounds containing this ion.
  3. A monatomic anion is named by taking the root of the element name and adding -ide.  Thus, the Cl- ion is called chloride, the S2- ion is called sulfide, and the O2- ion is called oxide.
Some common monatomic cations and anions are shown below
CationNameCationNameAnionNameAnionName
H+HydrogenLi+LithiumH-HydrideF-Fluoride
Na+SodiumK+PotassiumCl-ChlorideBr-Bromide
Cs+CesiumBe2+BerylliumI-IodideO2-Oxide
Mg2+MagnesiumCa2+CalciumS2-SulfideSe2-Selenide
Ba2+BariumAl3+AluminumN3-NitrideP3-Phosphide
Zn2+ZincAg+SilverAs3-ArsenideC4-Carbide

Give correct names for these Type I binary compounds
KClMgO
K2OAlCl3
CaOBaS
MgCl2Al2S3
NaHSrF2
ZnSMgI2
RbBrCaSe
Al2O3BaBr2
Na3NCsCl
Ca2CMg3P2
KICaCl2
Give correct formulas for these Type I binary compounds
calcium iodidemagnesium phosphide
calcium hydridesodium chloride
magnesium fluoridebarium oxide
cadmium bromidealuminum arsenide
sodium nitridecalcium sulfide
rubidium oxidepotassium selenide
barium nitridesodium iodide
lithium chloridelithium sulfide
silver sulfidecalcium carbide
aluminum nitridesodium hydride
cesium fluoridemagnesium nitride

No comments:

Post a Comment