વિધાન : સિગ્મા $(\sigma )$ પ્રબળ બંધ છે , જ્યારે પાઇ $(\pi )$ એ નિર્બળ બંધ છે
કારણ : અણુઓ $(\pi )$ બંધ વિશે મુક્તપણે ફરે છે.
AIIMS 2002, Medium
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c Sigma $(\sigma )$ bond is formed by axial overlap of atomic orbitals while pi $(\pi )$ bond is formed by lateral overlap. Since axial overlapping takes place to a greater extent than the lateral overlapping, former $(\sigma )$ bond is stronger than pi bond. Atoms attached to doubly bonded atom can't rotate freely around the double bond.
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