Question

Wuite Short notes
an Modern
Modern Periodic table .​

Answer 1

Answer:

modern periodic table, the elements are arranged in the order of their increasing atomic number. In the modern periodic table, there are seven horizontal rows called periods and eighteen vertical columns (1 to 18) called groups. The arrangement of the periods and groups results in formation of boxes.

Answer 2

In the modern periodic table, there are seven horizontal rows called period and eighteen Vertical columns (1 to 18) called groups.