Naming Covalent Compounds - Naming Binary Covalent...

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When a pair of elements form more than one type of  covalent compound , Greek prefixes are used to indicate  how many of each element are in a compound. For example: Compound Name N 2 O dinitrogen monoxide NO nitrogen monoxide N 2 O 3 dinitrogen trioxide N 2 O 5 dinitrogen pentoxide Some of the Greek prefixes are given in the table below: Prefix Number of Particular Element mono 1 di 2 tri 3 tetra 4 penta 5 hexa 6 hepta 7 octa 8 Rules for Binary Covalent Compounds 1. The prefix  mono  is never used for naming the first element of a compound. 2. The final o or a of a prefix is often dropped when the element begins with a vowel. For example, for  CO  the name will be carbon monoxide, and the final o of mono is dropped. Remember, it's  only the final o or a. So, the name of  ClO 2  will be chlorine dioxide, and no vowels are dropped. How do you know which element goes first? The element that comes first in the following list "goes" first.
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Naming Covalent Compounds - Naming Binary Covalent...

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