What are the demerits of Mendeleev's periodic table?

State the merits of Mendeleev's periodic table.

What is Mendeleev's Periodic law?

The element eka-boron in Mendeleev's periodic table is known as_____in the Modern periodic table

State the laws/ Define Mendeleev's periodic law,

Chlorine has two isotopes, viz. Cl-35 and Cl-37 Their atomic masses are 35 and 37. Their chemical properties are same. Where should these be placed in Mendeleev's periodic table? In different places or in the same place?

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

Answer the following questions: Due to uncertainity in the names of some of the elements, a question mark is indicated before the symbol in the Mendeleev's period table. What are such symbols?

State whether the following statements are True or False: Mendeleev,s periodic table is more useful because it gives information about known and unknown elements.

Merits of Modern periodic table over Mendeleev's periodic table

Write a short note on: Mendeleev's periodic law