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← ScienceWhich outcome occurs in graphene sheets when hydrogen attaches?
A)Local sp3 hybridization; sheet buckling✓
B)Increased electrical conductivity locally
C)Enhanced two-dimensional electron gas
D)Decreased thermal expansion coefficient
💡 Explanation
The hydrogenation of graphene induces local sp3 hybridization because one carbon atom covalently binds the hydrogen atom, therefore graphene’s structure is disrupted to tetrahedral geometry leading to sheet buckling, rather than maintaining sp2 planar conformations to improve conductivity.
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