What is the basis of classification of elements in the periodic table?

What is the basis of classification of algae?

Where is the position of d block elements in the periodic table?

The statement that is not correct for the periodic classification of elements is The properties of elements are periodic functions of their atomic numbers. Non-metallic elements are lesser in number than metallic elements. Electronegativity of the elements along the period from left to right increases in a regular manner. For transition elements the d-subshells are filled with the electrons monotonically with increase in atomic number.

What is the basic theme of organization in the periodic table?

The table given below lists the contributions and names of scientists who made earlier attempts in the classification of elements. Fill in the blanks.

Predict the position of the elements in the periodic table satisfying the configuration 3d^1 4s^2 .

Which important property did Mendeleev use to classify the elements in his periodic table and did he stick to that?

Advantages of Mendeleev's periodic table?