How does a single covalent bond differ from a double covalent bond?

Answer 1

Since both atoms share one atom in a single covalent bond, the bond has two electrons, allowing the two groups on either side to rotate.

Though there are electrons bonded around the side, neither group can rotate, which is why we can have E-Z alkenes but not E-Z alkanes. On the other hand, in a double covalent bond, each atom shares two electrons, meaning there are four electrons in the bond.

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Answer 2

Sarah Angotti

A single covalent bond involves the sharing of one pair of electrons between two atoms, while a double covalent bond involves the sharing of two pairs of electrons between two atoms.

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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.