Question

structure of modern periodic table​

Answer 1

Answer:

In the modern periodic table, the elements are arranged in the order of their inreasing 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 into formation of boxes.

Answer 2

Answer:

The periodic table is organised like a big grid. Each element is placed ina specific location because of its atomic structure.As with any grid, the periodic table has rows ( left to right ) and columns (up and down ) .Each row and column had specific characteristics.