Mass Spectrometry Quiz

1.
How many elements of the periodic table have only a single stable isotope?
- 0
- 15
- 26
Your answer:

Correct answer:

These so-called monoisotopic elements are beryllium, fluorine, sodium, aluminum, phosphorus, scandium, vanadium, manganese, cobalt, arsenic, rubidium, yttrium, niobium, rhodium, indium, iodine, cesium, lanthanum, praseodymium, europium, terbium, holmium, thulium, lutecium, rhenium, and gold.
2.
List these compounds according to their increasing mass: hydrazine (H4N2), oxygen (O2), methanol (CH4O).
- Hydrazine, oxygen, methanol
- Methanol, hydrazine, oxygen
- Oxygen, methanol, hydrazine
Your answer:

Correct answer:

The monoisotopic masses of these compounds are 31.989829 Da (oxygen), 32.026215 Da (methanol), and 32.037448 Da (hydrazine).
3.
Josef Mattauch is known for the development of Mattauch-Herzog double-focusing mass spectrometer and his work on isotopes and atomic weights. His career is connected with the Kaiser Wilhelm Institute for Chemistry in Berlin. Do you know where he was born?
- Berlin, Germany
- Ostrava, Czechia
- Klosterneuburg, Austria
Your answer:

Correct answer:

Josef Mattauch was born in 1895 in the city of Mährisch Ostrau, in what is now the Czech Republic, then part of the Austrian-Hungarian Empire.
4.
What is the base peak in the mass spectrum?
- The peak with the greatest m/z value
- The peak from which fragments are formed
- The peak that has the greatest intensity
Your answer:

Correct answer:

The base peak is the peak with the greatest intensity among all peaks in the spectrum. The intensity of each peak in the spectrum is expressed as a percentage relative to the intensity of the base peak.
5.
What is the trajectory of a charged particle moving parallel to a uniform electric field in a vacuum?
- The particle follows a curved path and continues to follow this path until it forms a complete circle
- Neither the trajectory nor the velocity of the particle changes
- The particle either accelerates or decelerates, depending on the field direction and the particle charge sign
Your answer:

Correct answer:

If a positive charge is moving in the same direction as the electric field vector the particle's velocity will increase. If it is moving in the opposite direction it will decelerate. If a negative charge is moving in the same direction as the electric field vector the particle will decelerate. If it is moving in the opposite direction it will accelerate.
6.
The quadrupole mass filter has been known since the mid-1950s thanks to the work of Wolfgang Paul. The motion of ions in a quadrupole field can be described by solving second-order differential equations. When were these equations solved mathematically?
- 1868
- 1968
- 1989
Your answer:

Correct answer:

The solution of differential equations of this type came from the French mathematician Émile Léonard Mathieu (1835-1890), who studied the mechanical vibrations of the elliptical drumheads.
7.
Chemical ionization (CI) is a soft ionization technique used in mass spectrometry. Who discovered it?
- Burnaby Munson and Frank H. Field
- Michael Barber
- Hans-Dieter Beckey
Your answer:

Correct answer:

Chemical ionization was discovered in the laboratories of the Humble Oil and Refining Company in Baytown, TX. Munson and Field’s seminal paper on chemical ionization was published in 1966. [https://doi.org/10.1021/ja00964a001]
8.
What is the trajectory of a charged particle moving perpendicularly to a uniform magnetic field in a vacuum?
- The particle follows a curved path and continues to follow this path until it forms a complete circle
- The particle follows a helical path
- The particle follows a straight line and accelerates
Your answer:

Correct answer:

The magnetic force is perpendicular to the velocity so that it does no work on the charged particle. The particle’s kinetic energy and speed thus remain constant. The direction of motion is affected but not the speed.
9.
Lunar craters are usually named after scientists and explorers. One of the craters on the Moon is named after a prominent scientist in the field of mass spectrometry. Who is named after?
- Francis William Aston
- Wolfgang Paul
- John Bennett Fenn
Your answer:

Correct answer:

Aston is a 44-kilometer lunar impact crater located along the northwestern limb of the Moon. The crater was named in honor of Francis W. Aston.
10.
What was the largest number of quadrupoles connected in series for tandem mass spectrometry in a commercial instrument?
- 5
- 7
- 9
Your answer:

Correct answer:

A penta-quadrupole mass spectrometer contains three quadrupole filters and two rf-only quadrupole collision cells. It allows MS³ experiments. Extrel once offered such a spectrometer.

Mass Spectrometry Quiz

Mass Spectrometry Quiz

Thank you for taking our quiz!

1.
How many elements of the periodic table have only a single stable isotope?

2.
List these compounds according to their increasing mass: hydrazine (H4N2), oxygen (O2), methanol (CH4O).

3.
Josef Mattauch is known for the development of Mattauch-Herzog double-focusing mass spectrometer and his work on isotopes and atomic weights. His career is connected with the Kaiser Wilhelm Institute for Chemistry in Berlin. Do you know where he was born?

4.
What is the base peak in the mass spectrum?

5.
What is the trajectory of a charged particle moving parallel to a uniform electric field in a vacuum?

6.
The quadrupole mass filter has been known since the mid-1950s thanks to the work of Wolfgang Paul. The motion of ions in a quadrupole field can be described by solving second-order differential equations. When were these equations solved mathematically?

7.
Chemical ionization (CI) is a soft ionization technique used in mass spectrometry. Who discovered it?

8.
What is the trajectory of a charged particle moving perpendicularly to a uniform magnetic field in a vacuum?

9.
Lunar craters are usually named after scientists and explorers. One of the craters on the Moon is named after a prominent scientist in the field of mass spectrometry. Who is named after?

10.
What was the largest number of quadrupoles connected in series for tandem mass spectrometry in a commercial instrument?

Czech Museum
of Mass Spectrometry

Our partners

Mass Spectrometry Quiz

Mass Spectrometry Quiz

Thank you for taking our quiz!

1. How many elements of the periodic table have only a single stable isotope?

2. List these compounds according to their increasing mass: hydrazine (H4N2), oxygen (O2), methanol (CH4O).

3. Josef Mattauch is known for the development of Mattauch-Herzog double-focusing mass spectrometer and his work on isotopes and atomic weights. His career is connected with the Kaiser Wilhelm Institute for Chemistry in Berlin. Do you know where he was born?

4. What is the base peak in the mass spectrum?

5. What is the trajectory of a charged particle moving parallel to a uniform electric field in a vacuum?

6. The quadrupole mass filter has been known since the mid-1950s thanks to the work of Wolfgang Paul. The motion of ions in a quadrupole field can be described by solving second-order differential equations. When were these equations solved mathematically?

7. Chemical ionization (CI) is a soft ionization technique used in mass spectrometry. Who discovered it?

8. What is the trajectory of a charged particle moving perpendicularly to a uniform magnetic field in a vacuum?

9. Lunar craters are usually named after scientists and explorers. One of the craters on the Moon is named after a prominent scientist in the field of mass spectrometry. Who is named after?

10. What was the largest number of quadrupoles connected in series for tandem mass spectrometry in a commercial instrument?

Czech Museumof Mass Spectrometry

Our partners

1.
How many elements of the periodic table have only a single stable isotope?

2.
List these compounds according to their increasing mass: hydrazine (H4N2), oxygen (O2), methanol (CH4O).

3.
Josef Mattauch is known for the development of Mattauch-Herzog double-focusing mass spectrometer and his work on isotopes and atomic weights. His career is connected with the Kaiser Wilhelm Institute for Chemistry in Berlin. Do you know where he was born?

4.
What is the base peak in the mass spectrum?

5.
What is the trajectory of a charged particle moving parallel to a uniform electric field in a vacuum?

6.
The quadrupole mass filter has been known since the mid-1950s thanks to the work of Wolfgang Paul. The motion of ions in a quadrupole field can be described by solving second-order differential equations. When were these equations solved mathematically?

7.
Chemical ionization (CI) is a soft ionization technique used in mass spectrometry. Who discovered it?

8.
What is the trajectory of a charged particle moving perpendicularly to a uniform magnetic field in a vacuum?

9.
Lunar craters are usually named after scientists and explorers. One of the craters on the Moon is named after a prominent scientist in the field of mass spectrometry. Who is named after?

10.
What was the largest number of quadrupoles connected in series for tandem mass spectrometry in a commercial instrument?

Czech Museum
of Mass Spectrometry