Podcast
Questions and Answers
What is the atomic number of an atom?
What is the atomic number of an atom?
- The number of neutrons
- The number of protons in the nucleus (correct)
- The number of electrons in orbitals
- The total number of protons and neutrons in the atom
What technique can be used to ionize a sample in a mass spectrometer?
What technique can be used to ionize a sample in a mass spectrometer?
- Formation of negative ions
- Electrospray ionisation (correct)
- Injection of protons at high pressure
- Electron gun firing high energy neutrons
What are isotopes?
What are isotopes?
- Atoms with different numbers of neutrons, but same numbers of protons
- Atoms with different numbers of protons and neutrons
- Atoms with different numbers of protons, but same numbers of neutrons
- Atoms with the same number of protons, but different numbers of neutrons (correct)
What is the relative mass of an electron?
What is the relative mass of an electron?
What does the mass number represent for an atom?
What does the mass number represent for an atom?
What is the purpose of the high voltage at the tip of the needle in electro spray ionisation?
What is the purpose of the high voltage at the tip of the needle in electro spray ionisation?
Which technique is preferred for larger organic molecules due to its 'softer' conditions?
Which technique is preferred for larger organic molecules due to its 'softer' conditions?
What determines the velocity of each particle in the flight tube?
What determines the velocity of each particle in the flight tube?
What generates a small current fed to a computer for analysis in the detection area?
What generates a small current fed to a computer for analysis in the detection area?
In electro spray ionisation, what role does the volatile, polar solvent play?
In electro spray ionisation, what role does the volatile, polar solvent play?
What is the effect of electron impact on larger organic molecules?
What is the effect of electron impact on larger organic molecules?
Which area is responsible for distinguishing ions by their flight times?
Which area is responsible for distinguishing ions by their flight times?
What is used to accelerate positive ions in the acceleration area?
What is used to accelerate positive ions in the acceleration area?
What does the velocity of each particle in the flight tube depend on?
What does the velocity of each particle in the flight tube depend on?
'Softer' conditions in electro spray ionisation mean that:
'Softer' conditions in electro spray ionisation mean that:
