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Binary Molecular compounds

This guide teaches you how to identify and name binary molecular compounds composed of two non-metallic elements. Learn essential naming conventions, including the use of prefixes to indicate the number of atoms present. Compounds such as NO2 (nitrogen dioxide) and P2O5 (dinitrogen pentoxide) exemplify this naming technique. Remember, the first element may not receive a prefix if it has only one atom, while the second element always ends in "ide" and gets a prefix. Dive in to enhance your understanding of these compounds!

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Binary Molecular compounds

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  1. Binary Molecular compounds

  2. How to identify them • As the name might suggest (BInary), these compounds contain exactly two elements. • In this class both of these elements will be non-metals. • If a compound is made of exactly two elements and both of them are non-metallic you will use the skills you learn today to name the compound.

  3. Examples • Names of binary molecular compounds are NOT to be memorized. They must be figured out. • NO2 is called nitrogen dioxide. • P2O5 is called dinitrogenpentoxide. • SO3 is called sulfur trioxide. • Today I will teach you to name these compounds. • NOTE: All are made up of exactly two non-metallic elements.

  4. Prefix system • Look right. You will want to copy this chart down. • These prefix indicate the number of each atom present in a compound. • Rule 1: If the first element has only one atom it receives no prefix.

  5. Prefix system • Rule 2: The second atom ALWAYS gets a prefix, even if there’s only one. • CO is called carbon monoxide. • Rule 3: The second atom ALWAYS ends in “ide”.

  6. Prefix system • Here’s an example problem: • Name: Sulfur hexafluoride • Symbol SF6

  7. Prefix system • Here’s another example problem: • Name: Tetraphosphorousdecoxide • Symbol P4O10

  8. Prefix system • Here, you try one • Name: Carbon tetrafluoride • Symbol ?????

  9. Prefix system • Here, you try one • Name: Carbon tetrafluoride • Symbol CF4

  10. Prefix system • Try another one: • Name: ??? • Symbol PCl5

  11. Prefix system • Try another one: • Name: Phosphorus pentachloride • Symbol PCl5

  12. Prefix system • One last one: • Name: ?????? • Symbol N2O

  13. Prefix system • One last one: • Name: Dinitrogen monoxide • Symbol N2O

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