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Ch.9 - Molecular Geometry and Bonding Theories

Chapter 9, Problem 71f

Consider the H2+ ion. (f) Which of the following statements about part (e) is correct: (i) The light excites an electron from a bonding orbital to an antibonding orbital, (ii) The light excites an electron from an antibonding orbital to a bonding orbital, or (iii) In the excited state there are more bonding electrons than antibonding electrons?

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Hello everyone in this video. We're given these three statements here. We're trying to see if these are true or false regarding law this part right here, which says that if this ion was excited by light, the electron. And then we'll we'll see. So first we'll draw this diagram for our hee to ion. So we have these two boxes. one will represent the sigma Star where the one s orbital. Another one would be just the sigma oneness. Alright, so of course we will have one electron here And two electrons here. So this is just at its normal state without any assignments essentially. All right. And once it's excited by light to have this electron move that move from one any one of these electrons to this sigma star one? S So in that case then be excited that one electron by light and it moves to the sigma star one? S then we'll have in that sick must R one S. Then we'll have the two electrons there. And as for the sigma one s It will just be one electron. Some kind of dress. Look No way. It's not really flipping. We're just putting this electron to hear signing the electron from those statements that our first one that's going to be true. The 2nd 1 is also true and the last one is going to be false. So when the light exercise electron it's going to go to a higher molecular orbital. So from here to here. Alright, let's go ahead and write those answers as well. But those are going to be our final answers for this set of problems.