MEDIUM
10th CBSE
IMPORTANT
Earn 100

What is Newland's law of octaves? Why was this law rejected?

Important Questions on Periodic Classification of Elements

HARD
10th CBSE
IMPORTANT
Eduwiser's CBSE Chemistry For Class X>Chapter 5 - Periodic Classification of Elements>Exercise 3>Q 4

State the law on the basis of which Mendeleev classified the elements. Mention the important features of his Periodic Table. What are the merits and defects of Mendeleev's Periodic Table?

MEDIUM
10th CBSE
IMPORTANT
Eduwiser's CBSE Chemistry For Class X>Chapter 5 - Periodic Classification of Elements>Exercise 3>Q 5
Compare the known properties of gallium with those predicted by Mendeleev for eka-aluminium.
MEDIUM
10th CBSE
IMPORTANT
Eduwiser's CBSE Chemistry For Class X>Chapter 5 - Periodic Classification of Elements>Exercise 3>Q 6
What is Modern Periodic Law? Mention the important features of the Modern Periodic Table.
MEDIUM
10th CBSE
IMPORTANT
Eduwiser's CBSE Chemistry For Class X>Chapter 5 - Periodic Classification of Elements>Exercise 3>Q 7
What are the structural features of the Modern Periodic Table? Why is this Periodic Table supposed to be superior to other Periodic Tables?
MEDIUM
10th CBSE
IMPORTANT
Eduwiser's CBSE Chemistry For Class X>Chapter 5 - Periodic Classification of Elements>Exercise 3>Q 8
The Modern Periodic Table is closely related to the electronic configuration of elements. Justify this statement with examples.
MEDIUM
10th CBSE
IMPORTANT
Eduwiser's CBSE Chemistry For Class X>Chapter 5 - Periodic Classification of Elements>Exercise 3>Q 9
Discuss the important characteristics of periods and groups with reference to the Modern Periodic Table.
HARD
10th CBSE
IMPORTANT
Eduwiser's CBSE Chemistry For Class X>Chapter 5 - Periodic Classification of Elements>Exercise 3>Q 10
What is meant by periodicity and why does it occur when the elements are arranged in the increasing order of their atomic numbers?
MEDIUM
10th CBSE
IMPORTANT
Eduwiser's CBSE Chemistry For Class X>Chapter 5 - Periodic Classification of Elements>Exercise 3>Q 11
Discuss the trends in the Modern Periodic Table with reference to the following properties:
(i) Valency
(ii) Metallic and Non-metallic character
(iii) Nature of oxides
(iv) Ionisation energy
(v) Atomic radius
(vi) Electron gain enthalpy