Lengths of Single & Double Bonds

[Isabel_Eslabon_2G]

I don't remember if Lavelle spoke on this already, so I will just ask about it here.
If we are asked about lengths of single & double bonds on exams, do we need to memorize common ones (like C=C, or C-H) or will they be given in the question? Or do we get a reference chart for it?

[Anna Yakura 2F]

I don't think we would ever have to memorize these, I think in lecture the professor said he looked them up as well. I wouldn't worry about it! If there is a question on it the lengths will be given. However, we may be asked to compare the lengths of bonds (a single vs a double, for example).

[Kristina Krivenko 3I]

I don't think we need to memorize them, so I believe if we would need them to solve a problem, they'd be given in the question.

However, it's useful to know the general correlation that as the number of bonds increases, the length of the bonds decreases. For example, a double bond is shorter than a single bond, and so on.

[Rose_Malki_3G]

I do not think we will have to memorize these values (just remember that single bond is longer than double bond)

[Emma Ide 2E]

So far, we do not need to memorize them yet. In the lecture, he said he had looked them up when he gave us the values, so I think we will either be given the lengths or later be told to memorize them.