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Chemistry Chap 5

Chemistry Chap 5. Naming Compounds. Naming Compounds - Ionic. Binary Compounds – compounds containing only 2 elements To name: Write name of elem w/ (+) charge Add name of (-) elem (ion) Must end in i-d-e Example: AlN - aluminum nitride. Naming Compounds - Ionic.

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Chemistry Chap 5

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  1. Chemistry Chap 5 Naming Compounds

  2. Naming Compounds - Ionic • Binary Compounds – compounds containing only 2 elements • To name: • Write name of elem w/ (+) charge • Add name of (-) elem (ion) • Must end in i-d-e • Example: AlN - aluminum nitride

  3. Naming Compounds - Ionic • If elem has more than 1 oxidation #, must write the oxid # of the (+) ion after the name of the element • Use Roman numerals in ( )

  4. Naming Compounds - Ionic • Not all comps ending in i-d-e are binary • NaOH - sodium hydroxide • When naming comps w/ an elem & a polyatomic ion or 2 polyatomic ions, name (+) ion first then (-) ion. • Do not change the ending of the polyatomic ion.

  5. Naming Compounds - Molecular • Some comps are named by an older syst which used prefixes instead of oxid #’s • Usually used if both elems are nonmetals • Binary Molecular Compounds • Rules • If only 1 atom of 1st elem is needed , no prefix used • If more than 1 atom is needed, use a prefix • Always use a prefix for 2nd elem • End in I-d-e

  6. Examples of binary molecular compounds • CO – carbon monoxide • CO2 – carbon dioxide • CS2 – carbon disulfide • N2O5 - dinitrogen pentoxide

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