Question

b.short note on
Structure of the modern periodic
table.
​

Answer 1

Answer:

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. Atomic numbers are serially indicated in the upper part of these boxes.

Answer 2

Answer:

1. In the modern periodic table there are seven horizontal rows called periods and eighteen vertical columns (1 to 18) called groups.
2. The arrangement of the periods and groups results into formation of boxes.
3. Atomic numbers are serially indicated in the upper part of these boxes.

JAI SHREE KRISHNA