Question

What are the demerits of the modern periodic table?

Answer 1

Modern periodic table:

• The modern periodic table was comprised of groups and periods.
• The groups are the vertical columns while the periods are the horizontal rows.
• The elements were arranged in an order of increasing atomic number (Z).

Demerits of the modern periodic table:

• The position of Hydrogen was not given by the modern periodic table as it resembles the properties of both alkali metals as well as halogens.
• Lanthanides and actinides have been placed at the bottom of the periodic table rather than in the main body.
• Elements that were showing similar properties such as Barium and Lead are separated.
• No separate classification for metals, nonmetals, and metalloids.