Question

What is the modern periodic table?

Answer 1

Modern periodic table:

• It is defined as the table in which the elements are arranged in groups and periods.
• In the modern periodic table, the elements are arranged according to their increasing atomic numbers.

Position of the elements in the periodic table:

• There are $18$ groups and $7$ periods in this periodic table.
• The periods are arranged in horizontal rows.
• The groups are arranged in vertical columns.
• The elements in the modern periodic table are arranged from left to right.
• The elements present on the left side are known as metals and the elements present on the right side are non-metals.
• The transition metals are present in the middle of the periodic table.