Write modern periodic law .

Define the mordern periodic law . Discuss the construction of the long form of the periodic table .

The basis of modern periodic law is

Define modern periodic law. How is the long form of the periodic table constructed on the basis of this law?

State modern periodic law. How many groups and periods are present in the long form of the periodic table?

An element with the electronic configuration [Xe] 6s^(2)4f^(14)5d^(1) belong to which block in the modern periodic table.

What is the difference in the approach between the Mendeleev's periodic law and the modern periodic law?

What is the difference in the approach between the Mendeleev's periodic law and the modern periodic law?