BELL RINGER
• 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.
1. Calcium and Fluorine 2. Aluminum and Sulfur
1 ( +2) 2 (-1)
2(+3) 3(-2)
Ca
F
Al
S
CaF2
Al2S3
What should we call these compounds?
Naming Binary Ionic Compounds
Binary Ionic Compounds
• I CAN name a binary ionic compound
from its properly written formula.
What 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.
Naming 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.
EXAMPLES
• Chlorine – ends in “INE” – becomes CHLORIDE
• What does Bromine become? BROMIDE
• What about elements that do not end in INE?
– Oxygen becomes OXIDE
– Sulfur becomes SULFIDE
– Phosphorus becomes PHOSPHIDE
– Nitrogen becomes NITRIDE
– Arsenic becomes ARSENIDE
Practice Problems
• Name these compounds:
•
•
•
•
•
NaCl
CaF2
Ba3P2
K3N
AlAs
•
•
•
•
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SODIUM CHLORIDE
CALCIUM FLUORIDE
BARIUM PHOSPHIDE
POTASSIUM NITRIDE
ALUMINUM ARSENIDE
More 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 Oxygen
• 2. Potassium and Phosphorus
7. Calcium and Bromine
• 3. Radium and Nitrogen
8. Strontium and Arsenic
• 4. Lithium and Sulfur
9. Aluminum and Selenium
• 5. Boron and Fluorine
10. Rubidium and Astatine
• 1. RbF
• 2. K3P
• 3. Ra3N2
Rubidium Fluoride
Potassium Phosphide
Radium Nitride
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•
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Lithium Sulfide
Boron Fluoride
Francium Oxide
Calcium Bromide
Strontium Arsenide
Aluminum Selenide
Rubidium Astatide
4.
5.
6.
7.
8.
9.
10.
Li2S
BF3
Fr2O
CaBr2
Sr3As2
Al2Se3
RbAt