Is HBr paramagmetic or diamagnetic?
HBr is diamagnetic. All electrons are paired, so the sample of HBr will be repelled by a magnetic field. E. The ionization potential of HBr is 11.67 eV, which is nearly the same as that of Br (11.84 eV). Offer an explanation for this behavior. The ionization potential is a measure of how much energy it takes to remove an electron from the highest occupied molecular orbital or highest occupied atomic orbital. From the MO diagram, we see that all four electrons in the p non-bonding orbitals come from the Br s 4p orbitals. The energy of the nonbonding HBr molecular orbitals is essentially the same as the 4p atomic orbitals in Br. Thus it takes about the same amount of energy to knock an electron out of HBr as it does to knock one out of Br.
