EASY
Earn 100

The elements in Mendeleev's periodic table are arranged on the basis of:

50% studentsanswered this correctly

Important Questions on The Periodic Table

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

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

 

EASY
According to Mendeleev's periodic law, properties of elements are periodic function of their _____
MEDIUM
The number of Groups in Mendeleev's Periodic table was:
EASY
14 elements after actinium is called
MEDIUM
State Mendeleev's periodic law.
MEDIUM
Write the formulae of chlorides of Eka-silicon and Eka- aluminium, the elements predicted by Mendeleev.
HARD
How did Mendeleev predict the properties of eka-aluminium with the actual element gallium?
MEDIUM
State two main properties of elements on which Mendeleev's periodic classification was based. Why could no fixed position be assigned to hydrogen in his periodic table.
HARD
Mendeleev "predicted the existence of certain elements not known at that time and named two of them as Eka-silicon and Eka-aluminium".
(a) Name the elements that have taken the place of these elements
(b) Mention the group and the period of these elements in the Modern periodic table.
(c) Classify these elements as metals, non-metals or metalloids
MEDIUM
According to Mendeleev's periodic law, the elements were arranged in the periodic table in the order of:
MEDIUM
In Mendeleev's periodic table the elements were arranged in the increasing order of their atomic masses. However, cobalt with atomic mass of 58.93 amu was placed before nickel having an atomic mass of 58.71 amu. Give reasons for the same.
MEDIUM
Compare and contrast the arrangement of elements in Mendeleev's Periodic Table and the Modern Periodic Table.
MEDIUM
Why Mendeleev left some gaps in his periodic table?
EASY
What are groups and periods in the periodic table?
MEDIUM
What names were given by Mendeleev to the undiscovered elements (a) Scandium (b) Gallium and (c) Germanium?
MEDIUM
What were the chemical properties used by Mendeleev in creating his periodic table?