EASY
11th West Bengal Board
IMPORTANT
Earn 100

Why Mg2+ has smaller size 65 pm as compared to Na+95 pm although both have the same noble gas configuration?

Chapter-Wise 3D Chemistry Videos from K L Chugh NEW SYSTEMATIC MODERN CHEMISTRY (For Class 11 of WBCHSE)

The d-block Elements
08 min 21 sec

The d-block Elements

The periodic table started with elements arranged in increasing order of Z. Now, it can tell us much more about an element. Watch this video to learn more.
The f-block Elements
05 min 37 sec

The f-block Elements

The elements constituting the f-block are those in which the 4f- and 5f- orbitals are progressively filled. These elements are also known as inner transition...
Need for Classifying Elements
08 min 18 sec

Need for Classifying Elements

We all like things that are properly arranged and placed. What about the arrangement of elements? On what basis can they be arranged? Let us explore.