Induction and polar covalent bonds

PRACTICE the skill 1.13 identify any formal charges in the compounds below H 

TABLE 1.1 ELECTRONEGATIVITY VALUES OF SOME COMMON ELEMENTS 

When two atoms form a bond, there is one critical question that allows us to classify the bond What is the difference in the electronegativity values of the two atoms Below are some rough guidehnes  

If the d erence in electronegativity is less than 0.5, the electrons are considered to be equally shared between the two atoms, resulting in a covalent bond. Examples include C—C and C—H  

The C—C bond is clearly covalent, because there is no difiFerence in electronegativity between the two atoms forming the bond. Even a C—H bond is considered to be covalent, because the difiFerence in electronegativity between C and H is less than 0.5. 

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