Achievements of Mendeleev periodic table
Achievements of Mendeleev’s Periodic Table
- Systematic study of the elements
Mendeleev for the first time arranged a very large number of the elements into groups
and periods. This made the study of the elements quite systematic.
- Prediction of new elements and their properties
Mendeleev laid more stress on similarity in properties rather than increasing atomic masses of the elements. So whenever a particular element did not fit in the arrangement, he left a gap in the periodic table. Thus, many gaps for the undiscovered elements were left in the periodic table by Mendeleev.
For instance, scandium, gallium, and germanium, discovered later, have properties
similar to Eka–boron, Eka–aluminium, and Eka–silicon, respectively.
- Correction of doubtful atomic masses
Mendeleev also corrected the atomic masses of certain elements with the help of their expected positions and properties.
- When noble gases were discovered, they could be placed in a new group without disturbing the order.
- Mendeleev took the formulae of the oxides and hydrides formed by the elements as the basic properties of elements for their classification in the periodic table.
Achievements of Mendeleev’s Periodic Table
- Systematic study of the elements
Mendeleev for the first time arranged a very large number of the elements into groups
and periods. This made the study of the elements quite systematic.
- Prediction of new elements and their properties
Mendeleev laid more stress on similarity in properties rather than increasing atomic masses of the elements. So whenever a particular element did not fit in the arrangement, he left a gap in the periodic table. Thus, many gaps for the undiscovered elements were left in the periodic table by Mendeleev.
For instance, scandium, gallium, and germanium, discovered later, have properties
similar to Eka–boron, Eka–aluminium, and Eka–silicon, respectively.
- Correction of doubtful atomic masses
Mendeleev also corrected the atomic masses of certain elements with the help of their expected positions and properties.
- When noble gases were discovered, they could be placed in a new group without disturbing the order.
- Mendeleev took the formulae of the oxides and hydrides formed by the elements as the basic properties of elements for their classification in the periodic table.
