Polar-covalent

For each of the following molecules that contain polar covalent bonds indicate the positive and negative ends of the dipole using the symbol -<- Refer to Table 1 2 as needed... 

Carbon-oxygen and carbon-halogen bonds are polar covalent bonds and carbon bears a partial positive charge in alcohols ( " C—0 ) and in alkyl halides ( " C—X ) Alcohols and alkyl halides are polar molecules The dipole moments of methanol and chloromethane are very similar to each other and to water... 

Methyllithium has a polar covalent carbon-lithium bond... 

Polar covalent bond (Section 1.5) A shared electron pair bond in which the electrons are drawn more closely to one of the bonded atoms than the other. 

Chemists refer to the bond in a molecule like sodium chloride as ionic , meaning that its electron pair resides entirely on chlorine. At the other extreme is the covalent bond in the hydrogen molecule, where the electron pair is shared equally between the two hydrogens. Intermediate cases, such as the bond in hydrogen fluoride which is clearly polarized toward fluorine, are generally referred to as polar covalent bonds (rather than partially ionic bonds). Are these situations really all different or do they instead represent different degrees of the same thing ... 

CHAPTER 2 Polar Covalent Bonds Acids and Bases... 

CH3OH, has a polar covalent C-0 bond, and (b methyl-iithium, CH3Li, has a polar covalent C-Li bond. The computer-generated representations, called electrostatic potential maps, use color to show calculated charge distributions, ranging from red (electron-rich ... 

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