Question

3 difference between modern priodic table and medeleeves periosic table ​

Answer 1

In the modern periodic table, the elements are arranged in order of increasing atomic number. (In Mendeleev's table, they were arranged in order of increasing atomic weight). ... The gaps in Mendeleev's have been filled by the elements that were discovered

Answer 2

in modern periodic table the elements is in increasing atomic mass but Mendelleves doesn't do it

In modern periodic table there are 118 elements but in Mendelleves periodic table there is only approx 50 element