Question

compare the contrast the arrangement of element in Mendeleev periodic table and the modern periodic table​

Answer 1

Answer:

In mendeleev's periodic table elements were arranged according to their atomic weight but in modern periodic table elements were arranged according to their atomic no.

the columns in mendeleev's table were by their molecular formulae to combine with O2 and H

but in modern they were also arranged in a same way

in modern periodic table metals are shown by different colour and non metals and metalloids are shown by different colur