Question

State the limitation of the modern periodic table.

Answer 1

1. The primary limitation is the position of hydrogen.
2. It shares properties with Group 1 alkali metals.
3. It also closely resembles Group 17 halogens.
4. The Modern Periodic Table does not clear this dilemma.
5. Scientists finally agreed to place it in Group 1.
6. This decision is based on its low atomic number.