Introduction  Chapter 2: Atomic Structure

Class 9 Chemistry ka dusra chapter “Atomic Structure” students ko matter ke bunyadi hisson yani atoms ke structure ka idea deta hai. Chapter ki shuruaat purane zamane ke atom ke theory se hoti hai aur phir ye bataya jata hai ke kaise naye models ne purani soch ko reject kiya. Is chapter mein teen subatomic particles—electron, proton, aur neutron—ke baare mein detail se bataya gaya hai: ye kab aur kaise discover huay, aur inki khasoosiyat kya hain.

Is chapter mein aap electron shells aur subshells ka concept bhi seekhte hain, aur 2n² formula ke zariye electronic configuration ko samajhte hain. Iske alawa aapko atomic number, atomic mass, isotopes, aur relative atomic mass ka tafseel se bataya jata hai.

Chapter ka aik aham hissa radioactive isotopes aur radioactive decay par hai, jisme bataya gaya hai ke ye decay kaise hota hai aur iska use medicine aur carbon dating jaise tareeqon mein kahan hota hai.

Hamare class 9 new chemistry chapter 2 notes asaan aur seedhi English mein likhe gaye hain taake Punjab Board ke students aram se samajh saken aur exams ki achi tayyari kar saken.