Applicatiopns of the periodic table of elements?

Answer 1

The common applications of Periodic Table of Elements may be summarised as below:
1) It provides a systematic classification of elements that brings out a large amount of chemical facts. Practically, the study of elements is the study of Periodic Table.
2) Correction of doubtful atomic weights. The atomic weights of Be and In have been corrected with help of PT.
3) Prediction of undiscovered elements. Mendeleeff kept three vacant places below B, below Al (both in Gr III) and below Si in Gr IV. He called these yet-to-be-discovered elements as eka boron, eka aluminium and eka silicon, respectively and predicted their chemical characteristics accurately. The elements have been later discovered and named as gallium, scandium and germanium, respectively. The PT also supplied valuable information in the discovery of trace elements like Tc, Pm, Re, Hf, Po, At and Fr.
4) Periodic configuration of elements : A true consequence of the periodic law (Properties of elements are periodic in nature) is the logical deduction of periodic repetition of electronic configuration of atoms. This suggest that all elements belonging to the same group must have identical electron configuration of outermost shell.

Answer 2

The beauty of the table of Mendeleev is that it provided a classification that ordered the elements. If a new element was found, it could be put with ease into the periodic table.

A good example is Francium. It is so rare that there may be at any given moment only one Francium atom on the whole planet. So although it has never been studied, it has its place in the periodic table.

Answer 3

It's the best way to group the elements