What is the difference between sigma bond and pi bond?
A sigma bond forms by head-on overlap and is strong; a pi bond forms by sideways overlap of p-orbitals and is weaker.
A sigma bond forms by head-on overlap and is strong; a pi bond forms by sideways overlap of p-orbitals and is weaker. A reliable way to keep them apart is to focus on what each one is defined by, not just the similar-sounding words.
Key point
sigma bond vs pi bond
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