Classification ...

Lothar Meyer arranged the elements in order of increasing:

Law of Octaves was proposed by:

Law of Triads is applicable to which set of elements?

In Mendeleev’s periodic table, the groups were divided into how many subgroups?

Modern periodic table is divided into:

Moseley performed experiments and studied the frequencies of which radiations emitted from the elements?

Among the following statements the one that is not true about Mendeleev’s Periodic Table is:

Which scientist proposed that atomic number is more fundamental property of an element than its atomic mass?

Johann Dobereiner classified elements in group of three elements called as:

In the modern periodic table, which period contains 32 elements?

Horizontal rows in the periodic table are called:

The second and third period of the modern periodic table contains how many elements in all?

Newland arranged elements in increasing order of atomic weights and noted that every eighth element had properties similar to:

According to Dobereiner’s law of triads the number of elements present in each group is:

Lothar Meyer proposed that on arranging the elements in order of increasing atomic weights; similarities appear in which type of properties?

Eka silicon predicted by Mendeleev is which element:

Eka aluminium predicted by Mendeleev is which element?

The basis of long form of periodic table is:

Mendeleev predicted the existence of which element/elements in the periodic table?

At present how many elements are known?