In the figure, green R-groups are nonpolar and lavender R-groups are polar. Whic

Question

In the figure, green R-groups are nonpolar and lavender R-groups are polar. Which statement best explains this difference in terms of the relative electronegativities of C, H, O, and N?

a. Green R-groups contain primarily C and H, which have approximately equal electronegativities, and lack O; most lavender R-groups contain a highly electronegative O atom.

b. Green R-groups contain primarily C and H, which have significantly different electronegativities; most lavender R-groups also contain a more highly electronegative O atom.

c. Lavender R-groups contain primarily C and H, which have approximately equal electronegativities, and lack O; most green R-groups also contain a highly electronegative O atom.

d. Green R-groups contain primarily C and H, which have approximately equal electronegativities, and lack N; most lavender R-groups contain a highly electronegative N atom.

Explanation / Answer

a. Green R-groups contain primarily C and H, which have approximately equal electronegativities, and lack O; most lavender R-groups contain a highly electronegative O atom.

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