Thursday, September 17, 2009

electronegativity & breaking the octect

Good day reader.



What is electronegativity and how do you use the periodic table to determine an atom's electronegativity?



Breaking the octet.

The octect can be broken. H does not obey the octet. B does not obey the octet. Be does not obey the octet. Those are the 'traditional' exceptions [exclusions] - from the octet rule. Other elements can be excluded from the octet as well. P for example.



As we shall see later this unit. The bonding that is considered involves the s and p orbitals. Though sometimes the s and p are not enough. In the orbital world, what letter comes after s and p...?



sp3d* and sp3d2* provide additional room. Remember the word hybridization - it will came up in another few days. In the mean time did you check out the links from yesterday? The sparknote link has a few additional tidbits of explorable information.



*[At this point the sp3d and sp3d2 may be unknown, but soon the mist will clear, the sun will break out in all of its full colour spectrum [using high resolution spectroscopy of course] glory.



Demo time is soon. Have you searched for your demo yet?



[Why do white bears dissolve in water? Ans: Because they are polar.] [What is white, furry and goes RRRRG! RRRRG! Ans: A polar bear going backwards]

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