Chemistry, asked by believe123, 10 months ago

What is the difference between Modern periodic table and Mandeleev periodic table..

Write 5 differences....


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Answers

Answered by vismaya12
1

Answer:

  • Modern Periodic Table
  • the elements arranged periodically in the increasing order of their atomic number
  • there are 7 periods and 18 groups
  • in each element box the symbol of element atomic number mass number density the valency electronic configuration extermination
  • elements are divided into four blocks there is block P block D block F block
  • 18 group is called inert gas or noble gas

  • Mendeleev periodic table
  • no fixed position can be given to hydrogen in the periodic table
  • isotopes are discovered
  • atomic mass do not increase in a regular manner in going from one element to the next
Answered by Riya1045
0

Answer:

LIMITATIONS OF Mendeleev's Periodic Table : Position of Hydrogen => Position of hydrogen in the perodic table is Uncertain , Because hydrogen is placed in 1 A group with Alkali metals . Position of isotopes => isotopes haven't been given separate place in perodic table

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