CHEM 2E03 Chapter Notes - Chapter 2: Amide, Double Bond, Lone Pair
Document Summary
Partially condensed structure: the c-h bonds are not drawn explicitly eg. h3c ch2 ch3. Condensed structures: none of the bonds are drawn eg. (ch3)2choh. 2. 3 identifying functional groups functional group: characteristic group of atoms/bonds that possess a predictable chemical behaviour compounds with a c-c double bond typically react with h2 in the presence of a catalyst (pt) When a carbon atom bears a formal charge, either pos or neg, it will have three bonds not four. + charge: missing an eletron, only forms three bonds. Charge: has one extra electron; must have five valence e"s two e"s form a lone pair, other 3 are bonded. Difference between c- and c+: c+ has an empty fourth orbital, c- fourth orbital holds a lone pair. 2. 5 identifying lone pairs in order to determine formal charge we must know how many lone pairs it has. Must know formal charge to determine the number of lone pairs.
