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The textbook in section 2.16 page 83 says, "Multiple bonds are shorter than single bonds between the same two elements because the additional bonding electrons attract the nuclei more strongly and pull the atoms closer together.” This should help clarify your question!
double bonds are shorter than single bonds, and triple bonds are shorter than single bonds because the greater number fo the bond the more closely is it attracted to the nucleus, decreasing the atomic radius.
For the midterm we just took, there was no need to really know the difference. But in the future for the next test and the final, we will have to know the difference between poplar covalent and non polar covalent forces as well as the differences in their strengths, characteristics, etc.
There are more electrons involved in the bond hence there is a stronger attraction between the atoms. They are pulled closely so the length of the bond shortens compared to a single bond where only 2 electrons are being shared.
Lauren Sanchez 3D wrote:So triple bonds pull the nuclei even closer then? Which then makes them even stronger than double bonds?
Yes, in triple bonds, there are 6 shared electrons which pulls the two atoms even closer than in double bonds which makes triple bonds stronger and harder to break (more energy is needed).
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