Question

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What are the limitations of Modern period table?
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Answer 1

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THE LIMITATIONS OF MODERN PERIODIC TABLE ARE :-

➡️ The lanthanoids and actinoids i.e. d and f block elements are given no space in it they are separately mentioned at the bottom.

➡️ There is no fixed position of Hydrogen whether it should be placed in group - 1 elements or group - 17 elements.

➡️ There is no separate position for isotopes. For Eg :- Hydrogen has 3 isotopes detrium , protium , tritium.

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Answer 2

What are the limitations of modern period table ?

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Ans-: a) Position of hydrogen : It could not assign a correct position to hydrogen in the table . b) The lanthanides and antinides are not placed in the main body of the table . c) Position of isotope : There are no separate positions for isotopes of an element .

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