Hii dear!

You can get notes for class 11th second chapter of chemistry 'structure of atom' at Career360 . The notes mention details about structure of atom,  the experiments that led to discovery of atom, discovery of protons and neutrons, different models of atom like thomson's model, Rutherford model, bohr model, etc.

Apart from detailed notes with labelled diagram you can also practice questions at end of the notes.

Hope it helped you in understanding the chapter.

Thankyou