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The dipole moment (μ) of HBr (a polar covalent molecule) is 0.817D (debye), and its percent ionic character is 12.1%. Estimate the bond length of the H-Br bond picometers. Note that •1 D = 3.34 x 10^-30 C • m and • in a bond with 100% ionic character, Q = 1.6 x 10^-19 C. Express your answer to two significant figures and include the appropriate units.