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What are the disadvanteges in Mendeleeve's periodic table-and the advanteges of...

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suzy555 | Student, Grade 10 | (Level 1) Salutatorian

Posted September 25, 2010 at 10:43 PM via web

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What are the disadvanteges in Mendeleeve's periodic table-and the advanteges of Mosely's periodic table?

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doda96 | Student, Undergraduate | (Level 1) Honors

Posted September 27, 2010 at 10:38 PM (Answer #1)

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disadvantages of mendleev periodic table;1)he had to make disorder inthe arrangementof the elements inascendinng order according to the atomic weight to put them in grouops to suit their properties(chemical or phisical;metal or non-metal,solid or liquid.....)

2)he had to consider  isotpes as differ. elements so he had to put them in one cell.

advantages of mosley periodic table,he made modifications to mendleev,s table;1)he added group(0) of inert gases.2)he divided the elements of each group into 2 sub groups(A,B)

he specified a place for (lanthanides ,actinides)

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