Relative Molecular Mass and ions quiz

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What is the purpose of accelerating the positive ions towards a negatively charged detection plate in mass spectrometry?

To separate the ions based on their charge

To ionize the atoms further

To neutralize the ions before detection

To separate the ions based on their mass (correct)

In the ionisation process of mass spectrometry, what is removed from the atoms to create positive ions?

Protons

Neutrons

Nuclei

Electrons (correct)

In Time of Flight (TOF) mass spectrometry, what is measured to identify different isotopes?

The mass of the ions

The energy of the ions

The time it takes for ions to reach the detector (correct)

The charge of the ions

What type of charge do the ions have after the ionisation process in mass spectrometry?

Positive charge Signup and view all the answers

What is produced as a result of the mass spectrometry analysis?

A spectrum showing the relative abundance of each isotope Signup and view all the answers

What is the primary purpose of mass spectrometry?

To identify different isotopes and find the relative atomic mass of an element Signup and view all the answers

What is the primary purpose of the magnetic field in mass spectrometry?

To deflect the ions into a curved path Signup and view all the answers

What happens when a positive ion hits the negatively charged detection plate?

It gains an electron, producing a flow of charge Signup and view all the answers

What is the purpose of the analysis step in mass spectrometry?

To produce a spectra print-out with the relative abundance of each isotope Signup and view all the answers

What happens if a 2+ charged ion is produced during the ionization process?

It will be deflected less by the magnetic field, resulting in a smaller radius path Signup and view all the answers

What is the purpose of calculating the Ar value from the mass spectrometry data?

To identify the element by referring to the Periodic Table Signup and view all the answers

How is the Ar value calculated from the mass spectrometry data?

By multiplying each m/z value by its abundance and adding them together, then dividing by the total abundance Signup and view all the answers

What is the main factor that determines the molecular ion peak in a mass spectrum?

The relative molecular mass of the molecule Signup and view all the answers

What is the characteristic pattern observed in the mass spectrum of chlorine?

A 3:1 ratio for Cl+ ions and a 3:6:9 ratio for Cl2+ ions Signup and view all the answers

What is the process of ionization energy defined as?

The minimum energy required to remove one mole of electrons from one mole of atoms in a gaseous state Signup and view all the answers

Why do successive ionization energies typically require more energy?

The electrostatic force of attraction between the positive nucleus and the negative outer electron increases Signup and view all the answers

What is the primary factor that influences the trends in first ionization energy within the Periodic Table?

The proton-electron forces of attraction and electron shielding Signup and view all the answers

In mass spectrometry, what is the process of ion drift?

The process of separating ions based on their mass-to-charge ratio Signup and view all the answers