Understanding Paramagnetism and Diamagnetism

What is one advantage of molecular orbital theory over Lewis theory?

• It eliminates the need for electron configurations.

• It can account for magnetic properties.

• It can predict the color of substances.

• It simplifies chemical equations.

Why are paramagnetic substances attracted to magnetic fields?

• They have paired electrons.

• They have unpaired electrons.

• They have no electrons.

• They have a strong nuclear charge.

What generates the tiny magnetic fields in paramagnetic substances?

• Nuclear spin

• Proton movement

• Electron pairing

• Angular momentum of unpaired electrons

How do diamagnetic substances interact with magnetic fields?

• They become magnetic themselves.

• They are attracted to magnetic fields.

• They are repelled by magnetic fields.

• They are neutral to magnetic fields.

What is the key characteristic of diamagnetic substances?

• High atomic number

• Strong covalent bonds

• Presence of unpaired electrons

• Absence of unpaired electrons

What is the magnetic nature of the H2 molecule?

• Ferromagnetic

• Diamagnetic

• Paramagnetic

• Antiferromagnetic

Why is the H2 molecule considered diamagnetic?

• It has no electrons.

• It has unpaired electrons.

• It has paired electrons.

• It has a high atomic mass.

What is the magnetic nature of the O2 molecule?

• Paramagnetic

• Diamagnetic

• Ferromagnetic

• Antiferromagnetic

How many unpaired electrons are present in the O2 molecule?

• Three

• Two

• One

• None

What experimental evidence supports the paramagnetic nature of O2?

• O2 is repelled by magnets.

• O2 becomes a liquid in a magnetic field.

• O2 changes color in a magnetic field.

• O2 is attracted to magnets.