Periodic Table and Periodicity

What is so special about it?

(a) Helps us to bring order into inorganic chemistry

(b) Concept of chemical periodicity

- Central to study of inorganic chemistry.

(c) It systematizes and rationalizes

- Chemical facts

- Predict new ones

- Suggest fruitful areas for further research

Periodic Law:

The properties of chemical elements are not arbitrary, but depend upon the electronic structure of the atom and vary with the atomic number in a systematic way.

Therefore: Periodic Table may be useful for

- the interpretation of the periodic law in terms of the electronic structure of atoms

- the systematization of trends in physical & chemical properties, and to detect possible errors, anomalies, & inconsistencies

- the prediction of new elements & compounds and to suggest new areas of research

Periodic Table