Mendeleev's Periodic Table

What are the three limitations of Mendeleev's classification?

Eka boron has properties similar to that of _____.

What are the properties of eka boron?

Eka boron has similar properties as that of scandium.

The Eka- Aluminium predicted by Mendeleev's was later replaced by which element?

According to Mendeleev’s periodic law, properties of elements are the periodic function of their _____.

Which of the following is/are achievement(s) of Mendeleev's periodic table?

Eka-Boron is the name given by Dmitri Mendeleev to the then undiscovered element at the position of scandium in his periodic table.

What is the general formula of oxides of the second group element according to Mendeleev?

In periodic table, the basic character of oxides

 _____(Mendeleev/Moseley) law states that the properties of elements are periodic function of their atomic masses.

Mendeleev predicted  the existence of certain elements not known at that time and named two of them as eka-silicon and eka-aluminium.
Classify these elements as metals or non-metals or metalloids.

Mendeleev predicted the existence of certain elements not known at that time and named two of them as eka-silicon and eka-aluminium. Mention the group and the period of these elements in the modern periodic table.

Mendeleev predicted the existence of certain elements not known at that time and named two of them as eka-silicon and eka-aluminium.
Name the elements which have taken the place of these elements.

One mineral (metal) presents in major quantity in milk is _____.

Among the following elements, _____ does not fit in Dobereiner's traid.

$\mathrm{F},\hspace{0.17em}\mathrm{Cl}, \mathrm{Br}, \mathrm{I}$

The element with atomic number $14$ is hard and forms acidic oxide and covalent halide.The element belongs to _____ category.

Which of the following is the outermost shell for elements of period 2?

Three elements B, Si and Ge are _____.

Up to which element, the law of octaves was found to be applicable?