σ bond π bond se strong kyun hota hai?›
σ mein overlap axial (head-on) hota hai — orbitals directly ek-doosre ke saamne, isliye extent of overlap maximum. π mein overlap lateral (sideways) hota hai, jo kam hota hai. Zyada overlap = zyada strong bond, isliye σ > π.
Double bond (C=C) ghoom kyun nahi sakta?›
Double bond = 1σ + 1π. π bond ka lateral overlap tabhi bacha rehta hai jab dono p-orbitals parallel hon. Ek carbon ko 90° ghumao to overlap toot jaata hai aur bond tab tak break hone jitni energy lagti hai — isliye C=C ke around rotation restricted hai.
Single bond hamesha σ hi kyun hota hai?›
Sabse pehle jo overlap banta hai wo hamesha head-on (axial) hota hai, jo σ deta hai — sabse strong, sabse stable. π sirf tab banta hai jab pehle se ek σ maujood ho (double/triple bonds mein).