CHEM 281 Chapter Notes - Chapter 1: Butane, Covalent Bond, Structural Isomer

• School: Simon Fraser University
• Department: Chemistry
• Course: CHEM 281
• Professor: Peter Wilson

Document Summary

Here i"m using the lewis structures of the atoms (i. e. , just showing the valence shell electrons) to construct molecules and then i"m showing various schematic / pictorial representations of molecules (for molecular hydrogen and several hydrocarbons). The valence shells of the two h atoms (2 electrons) are filled in the hydrogen molecule by sharing electrons. The two atoms are connected by a single covalent bond (2 electron bond). Both the valence shells of the c atom (8 electrons) and h atoms (2 electrons) are filled in the methane molecule. Ethane (c2h6): (2 c + 6 h). Propane (c3h8): (3 c + 8 h). Butane, pentane, hexane, heptane, octane, nonane and decane: There are constitutional isomers of butane, pentane and hexane etc. (i. e. the same molecular formula but the atoms are connected in a different manner). Butane and isobutane have the same molecular formula (c4h10). These are the two additional constitutional isomers of pentane (c5h12).