Bond angle/s character

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halle young 4A
Posts: 68
Joined: Thu Jul 11, 2019 12:16 am

Bond angle/s character

Postby halle young 4A » Mon Nov 25, 2019 4:06 pm

can some please explain homework problem 2F.15?

noting that the bond angle of am sp3 hybridized atom is 109.5 and that of an sp2 hybridized atom is 120, do you expect the bond angle between two hybrid orbitals to increase or decrease as the s-character of the hybrids increases?

specifically what do they mean by s-character?

Cooper Baddley 1F
Posts: 100
Joined: Wed Sep 18, 2019 12:19 am

Re: Bond angle/s character

Postby Cooper Baddley 1F » Mon Nov 25, 2019 4:18 pm

I understood this question as from sp3 to sp2 the bond angles increase from 109.5 to 120 so if it goes from sp2 to sp you would expect bond angles of 180 as it would be in a linear arrangement

Sam McNeill 1E
Posts: 110
Joined: Sat Aug 24, 2019 12:17 am

Re: Bond angle/s character

Postby Sam McNeill 1E » Mon Nov 25, 2019 4:45 pm

S-character I believe is the ratio of s to p, so as the ratio grows for s, the angles grow. Just think less p, less regions of density to repel the other regions.

Shrayes Raman
Posts: 129
Joined: Sat Jul 20, 2019 12:15 am

Re: Bond angle/s character

Postby Shrayes Raman » Wed Nov 27, 2019 2:32 am

Sp3 has less s character than sp2 so so will have more than sp2... This means the bond angle will increase as a trend

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