October 15th Lecture

Well, its that time again, time for another hour of chemistry! Starts quick.

Octet Rule

"In most compounds, representat- (cut off by the side of the screen)
elements achieve noble gas
configurations"

NH4+  (pictured beside this is a nice little lewis dot diagram of the NH4+ structure)

S=N-A

Shared e- = needed e-  -  available e-  (e- refers to electron)

Question: Lewis structure of C2H2?

S = [8*2+2*2] - [4*2 + 2*1]
S = 10 => 5 bonds

H-(single bond)-C-(tripple bond)-C-(single bond)-H


On the powerpoint screen, there is a slide of instructions for writing lewis structures.
And another now! MOAR LEWIS STRUCTURES.

Theres another example similar to the one above going up on the screen, not really paying attention, this is easy shit.

Some more babbling about that CH5+ problem from last lecture.  Prof has been reassuring us that it actually exists, and that he wasn't just fuckin with us. 

Continuation of the topic is another seemingly disfunctional compound H3+
This structure has 3 atoms but only two electrons.  This bends regular thinking of bonding structures, and the depicted structure of the compound makes excellend use of dotted we-don't-know-how-the-fuck-this-works lines.

Looks like we'll have to memorize these oddities...

Prof proceeds to answer a question a student had from before, basically all I got out of it is that Mendeliev was a player.  Cool shit.

END OF LECTURE!

Total duration: 45 minutes