What is the significance of mendeleevs periodic law

What are the advantages of periodic change? What two properties are the modern periodic table based on? What is the importance of modern periodic table? What are the basis of modern periodic table? What are the features of the modern periodic table? What are the structural features of long form of periodic table? What is meant by long form of periodic table? Why is long form of periodic table?

Who proposed long form of periodic table? The element germanium was discovered later. Its properties were found to be similar to the predicted ones and confirmed Mendeleev's periodic table.

Iodine has a lower relative atomic mass than tellurium. So iodine should be placed before tellurium in Mendeleev's tables. By looking at the chemical properties and physical properties of the elements next to a gap, he could also predict the properties of these undiscovered elements. For example, Mendeleev predicted the existence of 'eka-silicon', which would fit into a gap next to silicon. The element germanium was discovered later. Its properties were found to be similar to the predicted ones.

The other missing elements such as gallium and scandium were also then discovered, again with properties matching Mendeleev's predictions. Between zinc Zn and arsenic As are two such missing elements. Mendeleev believed that elements with atomic masses of 68 and 70 would eventually be discovered and that they would fit chemically into each of those spaces. This was also the case with the element that followed gallium, which was named eventually named germanium.

Element number , synthesized in , is named mendelevium after the founder of the periodic table. It would, however, be several years after Mendeleev died before the several discrepancies with the atomic masses could be explained and before the reasons behind the repetition of chemical properties could be fully explained.

Skip to main content. The Periodic Table. Search for:. State predictions made possible by this table. When you study for a test, how do you approach the task? Figure 1.