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Which outcome occurs when graphene sheet edges are functionalized with electron-withdrawing groups?

A)Band gap opening near the edges
B)Increased carrier mobility across sheet
C)Enhanced thermal conductivity overall
D)Decreased resistance to oxidation

💡 Explanation

When electron-withdrawing groups are added, they induce charge polarization near the edges, which breaks the symmetry of graphene's lattice structure and results in a band gap opening. Therefore, band gap opening occurs, rather than increased mobility, thermal conductivity or oxidation resistance which require doping or passivation.

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