Unit 6: Nomenclature - Part II Covalent Compounds Unit 6: Nomenclature - Part II

How do I name a covalent compound? Lesson Essential Questions: How do I name a covalent compound? How do I write a formula for a covalent compound?

Writing Names of Binary Molecular Compounds Ex. P2O5 Writing Names of Binary Molecular Compounds di phosphorus penta oxide 1. BM compounds use prefixes in their name. These are determined by the subscripts in the formula. You know it is a Binary Molecular Compound because it contains two elements 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.

Writing Names of Binary Molecular Compounds Ex. S2O10 Writing Names of Binary Molecular Compounds di sulfur deca oxide 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. Diarsenic Pentaoxide Write the formula for the first and second element. 2. Write subscripts for the prefixes in the name. As O 2 5