'Mendeleev vs Modern' periodic table

  • Created by: 24653366
  • Created on: 05-04-22 21:36

'Mendeleev vs Modern' periodic table


  • Elements with similar properties are placed in the same group
  • Horizontal rows are called 'periods'


  • Mendeleev's table left gaps for undiscovered elements
  • more elements in the modern periodic table
  • increasing order of ATOMIC MASS NUMBER vs. increasing order of ATOMIC NUMBER
  • Noble Gases included in modern table
  • In the modern table, transition metals have their own area
  • Clear difference between metals and non-metals in the modern periodic table

Overall comparison

Over time, knowledge and understanding on elements has changed and hence the modern periodic table is different to Mendeleev's periodic table.


No comments have yet been made