Aufbau principle, hunds Rule, Paulis Principle| jee|NEET|CBSE GRADE XI CHEMISTRY.
PLAYLISTS SOLID STATE THEORY- http://www.youtube.com/playlist?list=PL9nSaEI0m9rcKMSbPbOC8EuCaThImu9WL NUMERICALS- SOLID STATE NUMERICALS: http://www.youtube.com/playlist?list=PL9nSaEI0m9rdPccX8B3firE96NlU2eXH8 ALCOHOLS, PHENOLS & ETHERS THEORY-