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Questions and Answers
Which one of these is the cause of magnetism?
Which one of these is the cause of magnetism?
- Crystal-like structures within a substance
- Two electrons in each orbital
- One electron in each orbital (correct)
- All orbitals containing two electrons
What is the risk of having ferrous objects in the MR environment?
What is the risk of having ferrous objects in the MR environment?
- They may be attracted to the MRI unit (correct)
- They may damage the MRI unit
- They may cause interference with the MRI scan
- They may cause the MRI unit to malfunction
What is the cause of paramagnetism?
What is the cause of paramagnetism?
- Crystal-like structures within a substance
- Two electrons in each orbital
- One electron in each orbital (correct)
- All orbitals containing two electrons
What is the cause of diamagnetism?
What is the cause of diamagnetism?
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Which one of these is an example of a diamagnetic substance?
Which one of these is an example of a diamagnetic substance?
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Study Notes
- Magnetism is created by the principles defined by Pauli’s Exclusion Principle.
- Ferromagnetism is created when crystal-like structures within a substance contained atoms with one electron in its orbital.
- When only one electron is found within an orbital, a charge is place on the atom.
- Ferrous objects are not allowed in the MR environment due to the risk that they may be attracted towards the gantry of the MRI unit.
- Paramagnetism is created when atoms in a substance contained one electron in its orbital.
- Diamagnetism is created when atoms in a substance contained no electrons in its orbital.
- Diamagnetic substances have no net charge and are repelled by an external magnetic field.
- Copper, gold, and silver are examples of diamagnetic substances.
- Diamagnetic substances are created when all the orbitals within an atom contain two electrons.
- When placed in an external magnetic field, diamagnetic substances are repelled.
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