Page 2 - 2. HA-WS -13 Ch-5 CLASSIFICATION BY DOB.& NEWL.
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These triads are.-















































                     Advantages of Dobereiner’s classicification-
               Dobereiner’s classicification gave an idea about the relation between properties
               of elements and atomic mass.




                     Limitations of Dobereiner’s classicification-
               Dobereiner could classify only 9 of the existing 33 elements into 3 triads, as per
               their increasing order of atomic masses and similarity in properties..
               The other elements could not be classified like wise.






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