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Chemical Nomenclature. chemistry. Ionic Nomenclature. For cations Keeps its elemental name Examples: Na + – sodium ion Al 3+ – aluminum ion For anions Change the ending of the elemental name to - ide Examples: Cl is chlorine Cl – is chloride ion
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Chemical Nomenclature chemistry
Ionic Nomenclature • For cations • Keeps its elemental name • Examples: Na+ – sodium ion Al3+ – aluminum ion • For anions • Change the ending of the elemental name to -ide • Examples: Cl is chlorine Cl– is chloride ion S is sulfur S2– is sulfide ion
Ionic Nomenclature • Metal + Nonmetal • Name Cation first, then anion • CaCl2 : Calcium chloride • MgO: Magnesium oxide
Name the following compound, BaI2. • Barium iodide • Baride iodine • Barium iodine • Baride iodide 11 9
Name this Compound, CaBr2. • Calcium bromine • Carbon bromine • Calcium bromide • Carbon bromine 4 16
Polyatomic Ions • If Polyatomic is Cation, then list name & add anion name to the end • Ex) (NH4)Cl: Ammonium chloride • If polyatomic is anion, then name cation and list polyatomic name • Ex) Mg (NO3)2 Magnesium nitrate
Name this compound, NaNO3 • Sodium nitrate • Sodium nitrite • Sodium nitrogen oxide
What is the chemical formula for Calcium Phosphate? • Ca2(PO4)3 • Ca3(PO4)2
Name Formula • barium fluoride • aluminum bromide • strontium phosphate
Stock System (Roman numerals) • Some transition metals can have multiple charges • A roman numeral is used to indicate charge • Ex) Chromium can be +2 (II) or +3 (II) • Chromium (II) Sulfide = Cr+2 & S-2 = CrS • Chromium (III) Sulfide = Cr+3 & S-2 = Cr2S3
Name the compound FeN Write the formula for silver (I) hydroxide Write the formula for Copper (II) Oxide
Molecular (Covalent) Nomenclaturefor two nonmetals • Prefix System (binary compounds) 1. Least electronegative atom comes first. • Add prefixes to indicate # of atoms. Omit mono- prefix on the FIRST element. • Mono- is OPTIONAL on the SECOND element • Change the ending of the second element to -ide.
Molecular Nomenclature Prefixes NUMBER 1 2 3 4 5 6 7 8 9 10 PREFIX mono- di- tri- tetra- penta- hexa- hepta- octa- nona- deca-
Molecular Nomenclature: Examples • CCl4 • N2O • SF6 • carbon tetrachloride • dinitrogen monoxide • sulfur hexafluoride
More Molecular Examples • arsenic trichloride • dinitrogen pentoxide • tetraphosphorus decoxide • AsCl3 • N2O5 • P4O10
Name the compound CCl4 What is the chemical formula for Sulfur Trioxide