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How do pi bonds affect the shape of a molecule?

Answer 1

Pi bonds can't rotate freely like sigma bonds

This has an impact on the shape of the molecule because single bonds can rotate freely without breaking any bonds, but double bonds (remember, a double bond is one sigma bond and one pi bond) cannot be rotated without breaking any bonds, so if the pi bond is rotated, the interactions are broken, and this doesn't happen at room temperature because breaking a bond requires a lot of energy.

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Answer 2

Addison Armstrong

Pi bonds result in a double bond or triple bond, limiting rotation and influencing the molecular shape. They contribute to planar or linear arrangements, affecting bond angles and overall geometry.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.