Question

defects of long form of periodic table

Answer 1

position of hydrogen
accommodation of actinides and lanthanides

Answer 2

hey mate here is your answer

defects of long form of periodic table are..

1) position of hydrogen

2)it doesn't show exact distribution of electrons of some transition and inner transition elements

3) accomodation of lanthanide and actinide series in the main body of periodic table

hope it will help you

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