00:03
This is the answer to chapter 1 problem number 27 from the smith organic chemistry textbook.
00:11
And this problem asks us how many, or pardon me, which orbitals are used to form each of the carbon, carbon, and carbon hydrogen bonds in propane, and how many sigma bonds are present in this molecule.
00:27
And so anytime that we have a single bond, it's going to be an sp3.
00:35
So single bond equals sp3.
00:45
So you could also base this on the geometry around the molecule.
00:51
So if there are four groups around an atom.
00:58
So remember four groups from earlier problems is going to equal tetrahedral geometry around an atom.
01:07
And again, that's going to equal sp3.
01:12
So you could think about that either of those ways.
01:17
And so each of these bonds being a single bond and each of these carbons having tetrahedral geometry, the answer to the first part of this question is that each of these bonds is going to be constructed out of sp3 orbitals...