EASY
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Eka-aluminium predicted by Mendeleev is also known as _____?

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Important Questions on The Periodic Table

MEDIUM

An element X form an oxide X2O3. In which group of Mendeleev's periodic table, is this element X.

 

EASY
What were the criteria used by Mendeleev in creating his Periodic Table?
EASY
Elements in Mendeleev’s periodic table have been arranged according to: 
 
MEDIUM

Which of the following statement are incorrect regarding Mendeleev's periodic table?

(a) Mendeleev considered compounds formed by elements with oxygen and hydrogen.

(b) In the table Ni is placed before Co

(c) Eka-silicon in Mendeleev's periodic table is gallium

(d) The properties of the elements are periodic functions of their atomic masses.

EASY
14 elements after actinium is called
MEDIUM
The number of Groups in Mendeleev's Periodic table was:
EASY
According to Mendeleev's periodic law, properties of elements are periodic function of their _____
EASY
On the basis of similarities in properties, Mendeleev corrected the atomic masses of some elements. Some of these are:
MEDIUM
Mendeleev based his periodic table on the:
EASY
What are horizontal rows and vertical columns in Mendeleev’s periodic table known as?
EASY
Why did Mendeleev leave some gaps in his periodic table?
EASY
Mendeleev classified the elements on the basis of:
HARD
The elements A, B, C, D and E have atomic number 9,11,17,12 and 13 respectively. Which pair of elements belong to the same group?
EASY
Periodic table on the basis of atomic mass was prepared by:
MEDIUM
According to Mendeleev's periodic law, the elements were arranged in the periodic table in the order of:
HARD
An element X forms an oxide X2O3. In which group of Mendeleev's periodic table is this element placed?
HARD
In Mendeleev's periodic table, gap was not left for one of the following elements. This element is:
EASY
In Eka-aluminium, what does Eka signifies?
EASY
Which of the following is not a noble gases?
HARD
The correct formula of the oxide of Eka-aluminium element predicted by Mendeleev was: