Hello,

Here are some important topics of class 11th, Chemistry chapter-2 (structure of Atom):

1. Discovery and nature of subatomic particles

2. Models of atom: Thomson Rutherford and Bohr

3. Models of atom: merits and demerits

4. Dual nature of electromagnetic radiations

5. Planck's Quantum theory

6. Photoelectric effect and black body radiations

7. Atomic number and mass number

8. Isotopes and isobars

9. Atomic spectra (emission and absorption spectra)

10. Line spectrum of hydrogen and its explanation

11. Orbitals and Quantum numbers

12. Shape and energy of atomic orbitals

13. Principles followed for feeling of orbitals in atom
(a) Aufbau Principle
(b) Pauli Exclusion principles
(c) Hund's Rule of maximum multiplicity

14. Electronic configuration of atoms

Hope this helps, all the best.

Hello there,
Since you haven't mentioned any board I would give a common answer.
Here are the important topics of chapter 2 Structure of atom
Models of atom (all)
Merits and demerits of models is atom
Dual nature of electromagnetic radiation
Plank's quantum theory
Isobars and isotopes
Line spectrum of hydrogen
Atomic spectra
Principles of orbitals of atom(the 3 principles)
But even though I've mentioned such topics but you must go through the entire chapter to have greater good on that chapter.v This will help you in your future examinations.
Thank you

Hello dear student,

there is no particular topic which is not important in the chapter solution you have to read all the topics from this chapter because all are equally important.

When you will go further then you must should know how to calculate normality , molality, morality etc .the entire chapter is important so I will not give you any particular topic which is important in this chapter I would suggest you to kindly make yourself strong with this chapter . And you will see the wonders later .

Thank you