Compare and contrast the arrangement of elements in Mendeleev's periodic table and the Modern Periodic Table.

Compare and contrast the arrangement of elements in Mendeleev's period

1.	Compare and contrast the arrangement of elements in Mendeleev's periodic table and the Modern Periodic Table.
Answer» SOLUTION :Mendeleev’s periodic table Elementsarearrangedintheincreasingorderoftheiratomic masses. There are 8 GROUPS. Groups for noble gas was not present as noble gases were not discovered by that TIME. There was no place for ISOTOPES. Modern periodic table Elementsarearrangedintheincreasingorderoftheiratomic number. There are 18 groups. Groups are not subdivided into sub-groups. A separate group is meant for noble gases. Thisproblemhasbeenclarifiedasslotsaredetermined according to ATOMIC number.