Covalent Bonding, Electronegativity, and Bond
Chapter , Problem 43E(choose chapter or problem)
Problem 43E
Covalent Bonding, Electronegativity, and Bond Polarity (Sections)
(a) From the data in Table calculate the effective charges on the H and Br atoms of the HBr molecule in units of the electronic charge, e.
Table Bond Lengths, Electronegativity Differences, and Dipole Moments of the Hydrogen Halides
Compound |
Bond Length (Å) |
Electro negativity Difference |
Dipole Moment (D) |
HF |
0.92 |
1.9 |
1.82 |
HCl |
1.27 |
0.9 |
1.08 |
HBr |
1.41 |
0.7 |
0.82 |
HI |
1.61 |
0.4 |
0.44 |
(b) If you were to put HBr under very high pressure, so its bond length decreased significantly, would its dipole moment increase, decrease, or stay the same, if you assume that the effective charges on the atoms do not change?
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