what are all the advantages of dobereiner tried and newlands law of octaves and mendeleeev periodic table and Modern Periodic Table
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dobereiners triads➡
it gave idea for classification of elements.
it gave a support to newlands and mendeleevs classification.
Also dobereiner found when elements are arranged in increasing order of their atomic masses, the the mass of the middle element is the arithematic mean of other two.
newlands law of octaves ➡
he arranged the elements in increasing order of thier atomic masses and found the properties of eighth element to be similar to that of the eighth element.
it provided an idea of classification.
also his law was applicable till calcuim.
mendeleevs periodic table ➡
this classification is based on a more fundamental property i.e atomic mass.
it could predict the properties of elements which were yet to be discovered.
there are some gaps in his table for the elements yet to be discovered.
his table could accommodate noble gases when they were discovered.
it gave idea for classification of elements.
it gave a support to newlands and mendeleevs classification.
Also dobereiner found when elements are arranged in increasing order of their atomic masses, the the mass of the middle element is the arithematic mean of other two.
newlands law of octaves ➡
he arranged the elements in increasing order of thier atomic masses and found the properties of eighth element to be similar to that of the eighth element.
it provided an idea of classification.
also his law was applicable till calcuim.
mendeleevs periodic table ➡
this classification is based on a more fundamental property i.e atomic mass.
it could predict the properties of elements which were yet to be discovered.
there are some gaps in his table for the elements yet to be discovered.
his table could accommodate noble gases when they were discovered.
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