12 Questions
Define the atomic number of an atom.
The atomic number is the number of protons in the nucleus of an atom.
What is the formula to calculate the number of neutrons in an atom?
Number of neutrons = Mass number (A) - Atomic number (Z)
Explain the concept of isotopes.
Isotopes are atoms with the same number of protons but different numbers of neutrons.
How is relative isotopic mass defined?
Relative isotopic mass is the mass of one isotope compared to one twelfth of the mass of carbon-12.
What does the mass spectrometer help determine?
The mass spectrometer can determine all the isotopes present in a sample of an element.
Explain the concept of relative atomic mass.
Relative atomic mass is the average mass of one atom compared to one twelfth of the mass of carbon-12.
What is the equation used to calculate the relative atomic mass (R.A.M)?
R.A.M = Σ (isotopic mass x % abundance) / 100
How would a 2+ ion of 24Mg be represented in terms of mass and charge?
24Mg2+ with a 2+ charge would have a m/z of 12.
Why are mass spectrometers included in planetary space probes?
To identify elements on other planets by analyzing their isotopic composition.
What is the purpose of drug testing in sport using mass spectrometry?
To identify chemicals in the blood and detect breakdown products from drugs in the body.
How is mass spectrometry utilized in quality control in the pharmaceutical industry?
It is used to identify molecules in samples with potential biological activity.
What is the application of mass spectrometry in radioactive dating?
To determine the age of fossils or human remains.
Test your knowledge on the atomic structure of Lithium, including concepts such as atomic number, mass number, isotopes, protons, neutrons, and electrons.
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