Presentation on theme: "BELL RINGER CaF2 Al2S3 What should we call these compounds?"— Presentation transcript:
1BELL RINGER CaF2 Al2S3 What should we call these compounds? What would be the formula for a BINARY IONIC COMPOUND formed from each pair of elements? Refer to the COMMON ION Periodic Table for charges.Calcium and Fluorine Aluminum and Sulfur1 ( +2) 2 (-1) (+3) 3(-2)Ca F Al SCaF Al2S3What should we call these compounds?
3Binary Ionic Compounds I CAN name a binary ionic compound from its properly written formula.
4What are BINARY Ionic Compounds? The formulas we’ve written to this point represent BINARY IONIC compounds:Consist of only TWO DIFFERENT ELEMENTS.Contain a + METAL CATION and a – NONMETAL ANION.
5Naming a Binary Ionic Compound To name a binary ionic compound:1. Name the + METAL ION first by its ELEMENT NAME.2. Name the – NON-METAL ION last by its ELEMENT NAME except:Change the ENDING to “IDE”.If the name ends in “INE” just switch to “IDE”.If the name ends in something else, you may have to DROP PART OF THE NAME before changing to IDE.
6EXAMPLES Chlorine – ends in “INE” – becomes What does Bromine become? What about elements that do not end in INE?Oxygen becomesSulfur becomesPhosphorus becomesNitrogen becomesArsenic becomesCHLORIDEBROMIDEOXIDESULFIDEPHOSPHIDENITRIDEARSENIDE
7Practice Problems Name these compounds: NaCl SODIUM CHLORIDE CaF2 Ba3P2K3NAlAsSODIUM CHLORIDECALCIUM FLUORIDEBARIUM PHOSPHIDEPOTASSIUM NITRIDEALUMINUM ARSENIDE
8More Practice Problems Determine the FORMULA for the binary ionic compound formed by each pair of atoms, then NAME the compound.1. Rubidium and Fluorine 6. Francium and Oxygen2. Potassium and Phosphorus 7. Calcium and Bromine3. Radium and Nitrogen 8. Strontium and Arsenic4. Lithium and Sulfur 9. Aluminum and Selenium5. Boron and Fluorine Rubidium and Astatine