Doberenier traids limitations
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That time there were 30 elements discovered in 1839 when doberenier gave his triad law butDoberenier give framework of only 9 light elements And this triad rule will also matched for very few elements which later discovered
1 All the elements known at that time couldn\’t arranged in the form triads.2 When the new techniques of measuring atomic mass were evolved, his law was not remain valid.
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