Errata: 20:50 , In first line, decreasing acidic character order should be H3PO2, H3PO3, H3PO4.

https://www.quora.com/How-do-I-study-inorganic-chemistry-for-JEE/answer/Sharad-Pratap-Singh-8?srid=J2M9

Check text based posts @ https://sharadpra.wordpress.com/

YOU CAN POST YOUR DOUBTS/QUERIES/REQUESTS IN COMMENT SECTION
Our purpose is to cover all difficult or important variety problems.

You guys are welcome to request any doubt topic or problem etc.
and Do comment your views and we are happy to have your reactions to improve ourselves.

Background music:
Navajo Night by Audionautix is licensed under a Creative Commons Attribution licence (https://creativecommons.org/licenses/by/4.0/)
Artist: http://audionautix.com/

source