Raju and the 40 thieves Cartoon book published by Reserve Bank of India

 Raju and the 40 thieves. Cartoon book published by Reserve Bank of India to explain all sorts of online frauds. The book is printed in a comic style for easy understanding

CO-ORDINATION COMPOUNDS

d & f block elements slide presentation

METALS AND NON-METALS

ACIDS BASES AND SALTS

CHEMICAL BONDING AND MOLECULAR STRUCTURE

Dalton’s Atomic Theory

Limitations of Dalton’s Theory 

 • It fails to explain why atoms of different kinds should differ in mass and valency etc.

 • The discovery of isotopes and isobars showed that atoms of same elements may have different atomic masses (isotopes) and atoms of different kinds may have same atomic masses (isobars).

 • The discovery of various sub-aomic particles like X-rays, electrons, protons etc. during late 19th century lead to the idea that the atom was no longer an indivisible and smallest particle of the matter.