Question

mention the main features of the
modem periodic table.​

Answer 1

Answer:

Elements are arranged in the increasing order of atomic numbers.

Elements are arranged in the increasing order of atomic numbers.Elements in the modern periodic table are arranged in 7 periods and 18 groups.

Elements are arranged in the increasing order of atomic numbers.Elements in the modern periodic table are arranged in 7 periods and 18 groups.Horizontal rows are called periods and vertical columns are called groups.

Answer 2

1) It made the study of the elements much easier .

2) It is classified into periods and groups .

3) There are totally 18 groups and 7 periods .

4) There is a two set of series under periodic table .

5) These are called as Lanthanides and actinides .