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- Solutions 32

Predict the bond angles for all bonds in the following compounds:

(c)C_{2}H_{4}

Hey guys. So, in this problem we need to go ahead and figure out the bond angle of C2H4, okay? The different bond angles. So, here guys, let's go ahead and do this we've got C2H4 but how is this really connected, it's really connected with our two carbons, right? Right? Our two carbons are directly connected and we have four hydrogens, right? So what do we need to distribute our hydrogens and it probably just makes sense at first try to go ahead and distribute them evenly, right? Across the two carbons but if you notice we're missing something, right? We've got, we're missing a fourth bond, right? So we actually can go ahead and add that in, okay? Guys if you notice this actually has an IHD of one, right? if we go ahead and do this 2n plus 2 minus H, right? Which is going to be 4, right? So that's 4 plus 2 and 6 minus 4, so it's going to be 2 divided by 2, right? So we're going to have an IHD of 1 and guys here it is, we can't have any rings and so here's our double bond, okay? So, really what we need to be worried about is our bond angle between hydrogen carbon and this other carbon, right? And if we do it from the other side is the exact same thing because it's a symmetrical molecule, right? So, really what we need to be worried about is the H, C, C bond angle here, okay? And guys, this is an sp2 hybridized carbon and what we're going to get is a 120 degree bond angle. Alright guys, let's move on.