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Naming Binary Compounds

Naming Binary Compounds. CHEMICAL FORMULAS. Chemical Formula- represents a compound which includes the symbols and numbers of atoms Subscript : a number in a chemical formula that shows the number of a type of atom • i. e. H 2 0. BINARY COMPOUNDS. “Binary” means only 2 elements.

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Naming Binary Compounds

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  1. Naming Binary Compounds

  2. CHEMICAL FORMULAS • Chemical Formula- represents a compound which includes the symbols and numbers of atoms • Subscript: a number in a chemical formula that shows the number of a type of atom • i. e. H20

  3. BINARY COMPOUNDS • “Binary” means only 2 elements

  4. Cations Positively Charged Atoms i.e. Na+ Anions Negatively Charged Atoms i.e. Cl- Ions

  5. Group I > 1+ Group II > 2+ Group III > 3+ Group IV > 4+ IONIC CHARGES

  6. Group V > 3- Group VI > 2- Group VII > 1- Group VIII > Noble Gases IONIC CHARGES

  7. Ionic Compounds • composed of positive and negative ions. • usually formed from a metal and non-metal. • these elements arenot attached to one another.

  8. • Examples of Ionic Compounds NaCl CaBr2 KI

  9. FOR IONIC BONDS: • A formula needs to be written in the lowest whole number ratio. • i.e. Na2Cl2> NaCl

  10. Covalent Compounds Covalent Compounds • molecules in which elements shareelectrons. • usually composed of 2 nonmetals. • these elements are attached

  11. TYPES OF COMPOUNDS Covalent Compounds •Examples CS2 SiO2 BF3

  12. Naming Binary Covalent Compounds Prefixes are used to show how many atoms are present in each molecule. Mono=1, di=2, tri=3, tetra=4, penta=5, hexa=6, hepta=7, octa=8, nona=9, deca=10

  13. What word comes First in Covalent • Rule 1. (LEFT TO RIGHT) The element with the lower group number is written first in the name; the element with the higher group number is written second in the name. • Exception: when the compound contains oxygen and a halogen, the name of the halogen is the first word in the name. • Rule 2. (BOTTOM TO TOP) If both elements are in the same group, the element with the higher period number is written first in the name.

  14. NAMING BINARY COMPOUNDS

  15. Step 1: Determine if Ionic or Covalent IF IONIC: IF COVALENT: EXCEPTION:Mono not used on 1st Word

  16. PRACTICE

  17. NaBr MgF2 Sodium Bromide Magnesium Fluoride Writing Binary Compounds

  18. Potassium Chloride Aluminum Oxide KCl Al2O3 Writing Binary Compounds

  19. Writing Binary Compounds N2O dinitrogen monoxide

  20. CO2 Carbon Dioxide Writing Binary Compounds

  21. Writing Binary Compounds PCl3 Phosphorous Trichloride

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