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Author: Subject: Bond energy and Hybridisation
Dr.Felix Strausser
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sad.gif posted on 2-9-2015 at 06:17
Bond energy and Hybridisation


I was going through some reference material and came across something confusing.
According to it;
Bond length decreases with increase in s-character, since the s-orbital is smaller than the p-orbital.
Shorter the bond length, the greater the bond energy/strength.

I was pretty fine with those, as it didn't conflict with anything I came across earlier [as a matter of fact, it supports it], but what came up later utterly confused me.....
Bond energy increases in the following order:
s<p<sp<sp2<sp3


But this completely contradicts the earlier two points, according to which the bond energy should have increased as:
p<sp3<sp2<sp<s

Have they printed it wrong or is there something I've overlooked about this?
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DraconicAcid
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[*] posted on 2-9-2015 at 08:05


The more s-character in the bond, the shorter and stronger the bond. I'm not sure what they printed "for the following order"...was there more than just the one letter?



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blogfast25
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[*] posted on 2-9-2015 at 08:33


Quote: Originally posted by Dr.Felix Strausser  
I was going through some reference material and came across something confusing.
According to it;
Bond length decreases with increase in s-character, since the s-orbital is smaller than the p-orbital.
Shorter the bond length, the greater the bond energy/strength.

I was pretty fine with those, as it didn't conflict with anything I came across earlier [as a matter of fact, it supports it], but what came up later utterly confused me.....
Bond energy increases in the following order:

s < p < sp < sp2 < sp3


But this completely contradicts the earlier two points, according to which the bond energy should have increased as:

p < sp3 < sp2 < sp < s

Have they printed it wrong or is there something I've overlooked about this?


I've edited your post a bit: the angular brackets were fouling it.

[Edited on 2-9-2015 by blogfast25]

But these bonds should be called σ bonds: for example σ<sub>ss</sub>, σ<sub>pp</sub>, σ<sub>sp</sub>, σ<sub>sp2</sub> etc...


[Edited on 2-9-2015 by blogfast25]




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aga
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[*] posted on 2-9-2015 at 11:12


How is σ pronounced please.



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blogfast25
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[*] posted on 2-9-2015 at 11:23


Quote: Originally posted by aga  
How is σ pronounced please.


"sigma".




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aga
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[*] posted on 2-9-2015 at 13:01


Lower case Sigma.

ThanQ

O-flick was begging to embed itself, which was worrying.

[Edited on 2-9-2015 by aga]




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