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Binary Molecular Nomenclature ► Two nonmetals ► no charges to balance ► multiple subscripts possible  ex: N 2 O, NO, NO 2, N 2 O 4, N 2 O 5.

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Presentation on theme: "Binary Molecular Nomenclature ► Two nonmetals ► no charges to balance ► multiple subscripts possible  ex: N 2 O, NO, NO 2, N 2 O 4, N 2 O 5."— Presentation transcript:

1 Binary Molecular Nomenclature ► Two nonmetals ► no charges to balance ► multiple subscripts possible  ex: N 2 O, NO, NO 2, N 2 O 4, N 2 O 5

2 Use prefixes to represent subscripts ►m►m►m►mono = 1 ►d►d►d►di = 2 ►t►t►t►tri = 3 ►t►t►t►tetra = 4 ►p►p►p►penta = 5 ►H►Hexa = 6 ►h►hepta = 7 ►o►octa = 8 ►n►nona = 9 ►d►deca = 10

3 Rules, continued.. ►C►C►C►Change second name to end in “ide” ►d►d►d►do not use prefixes on the first word if the prefix is “mono” ►a►a►a►always use prefixes on the second name

4 Examples... ►C►C►C►CO2 ►c►c►c►carbon = first word ►s►s►s►subscript = 1, so no prefix ►o►o►o►oxide = second word ►s►s►s►subscript = 2, so prefix = di ►c►c►c►carbon dioxide

5 Examples... ►C►C►C►CO ►c►c►c►carbon = first word ►s►s►s►subscript = 1, so no prefix ►o►o►o►oxide = second word ►s►s►s►subscript = 1, so prefix = mono ►c►c►c►carbon monoxide

6 Examples... ►P►P►P►P2F6 ►p►p►p►phosphorus = first word ►s►s►s►subscript = 2, so prefix = “di” ►f►f►f►fluoride = second word ►s►s►s►subscript = 6, so prefix = hexa ►D►D►D►Diphosphorus hexafluoride

7 Examples... ►D►D►D►Dinitrogen tetroxide ►d►d►d►di = 2, so two nitrogen’s ►t►t►t►tetra = 4, so 4 oxygens ►N►N►N►N2O4

8 Examples... ►t►t►t►trisulfur heptachloride ►t►t►t►tri = 3, so three sulfur’s ►h►h►h►hepta = 7, so seven chlorides ►S►S►S►S3Cl7

9 Important!!!!! ► Never ever ever ever ever ever use prefixes if there are any metals in the compound!!!


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