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Learn how to write formulas and name covalent compounds in this lesson. Use prefixes to indicate the number of atoms in each element. Practice examples included.
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CovalentCompounds Unit 6: Nomenclature - Part II Mrs. Callender
Lesson Essential Questions: How do I write a formula for a covalentcompound? How do I name a covalent compound?
Ex. P2O5 Writing Names of BinaryMolecularCompounds penta oxide phosphorus di 1. BM compounds use prefixes in their name. These are determined by the subscripts in the formula. You know it is a BinaryMolecularCompound because it contains twoelements and both are nonmetals. 2. Write the name of the first element after the prefix. 1 – mono 2 – di 3 – tri 4 – tetra 5 – penta 6 – hexa 7 – hepta 8 – octa 9 – nona 10 - deca 3. Write the prefix of the second element. 4. Write the name of the second element changing the ending to –ide.
Ex. S2O10 Writing Names of BinaryMolecularCompounds deca oxide sulfur di 1. BM compounds use prefixes in their name. These are determined by the subscripts in the formula. 2. Write the name of the first element after the prefix. 1 – mono 2 – di 3 – tri 4 – tetra 5 – penta 6 – hexa 7 – hepta 8 – octa 9 – nona 10 - deca 3. Write the prefix of the second element. 4. Write the name of the second element changing the ending to –ide.
Writing Binary Covalent Formulas Ex.Nitrogen Trihydride Write the formula for the first and second element. 2. Write subscripts for the prefixes in the name. N H 3
Writing Binary Covalent Formulas Ex.DiarsenicPentaoxide Write the formula for the first and second element. 2. Write subscripts for the prefixes in the name. As O 2 5
