23.3.4 Magnetic Properties and Spin Flashcards
Which statement related to magnetism is not correct?
Lone electrons and electron pairs are attracted to magnetic fields.
Which statement related to magnetism and spin is not correct?
A paramagnetic substance, when placed on a Faraday balance, will appear to be the “lighter” species when a magnet is placed underneath it.
Look at the illustration for the free-electron model for metals. Which statement about the free-electron model is not correct?
In a free-electron model, the core electrons and the valence electrons are free to “float around” the lattice structure.
Look at the illustration that shows the electron alignments (or orientations) for paramagnetic and ferromagnetic substances. Which statement about this diagram is not correct?
Paramagnetic substances always have random electron orientations.
Which statement related to diamagnetism is not correct?
In a diamagnetic substance, at least some (but not all) of the electrons are paired.
Which statement related to paramagnetism is not correct?
Paramagnetism involves the repulsion of an atom or a molecule by a magnetic field.
Which of the following paramagnetic species is unique with respect to the other three paramagnetic species?
O2
Let’s look at [Co(F)6 ]3−, hexafluorocobaltate (III). Which statement about [Co(F)6 ]3− is not correct?
[Co(F)6 ]3− is “low spin” because it has unpaired electrons.
Let’s look at [Co(NH3 )6 ]3+, hexaammine cobalt(III). Which statement about [Co(NH3 )6 ]3+ is not correct?
When the electrons are assigned to orbital sites, lone electrons are first assigned to each of the three lower energy orbitals and then to the two upper orbital sites.
Look at the illustration for the free-electron model for metals. Which statement about this model is not correct?
The valence electrons are assigned to specific orbitals in the metal.
