Mass spectrometry

12 questions

1. What do isotopes of an element have in common?
2. Atoms form ___ when they gain or lose electrons.
3. How do you calculate the number of neutrons in an atom?
4. Which subatomic particle determines the identity of an element?
5. What does the relative atomic mass of an element represent?
6. What is the relative atomic mass of chlorine, given isotopes Cl-35 (75%) and Cl-37 (25%)?
7. What does the M⁺ peak represent in a mass spectrum?
8. What does fragmentation in mass spectrometry help identify?
9. How is the relative atomic mass calculated using mass spectrometry data?
10. What is a molecular ion?
11. Calculate the relative atomic mass of bromine, given isotopes Br-79 (50.7%) and Br-81 (49.3%). Give your answer to one decimal place.
12. Calculate the relative atomic mass of neon, given isotopes Ne-20 (90.48%), Ne-21 (0.27%), Ne-22 (9.25%). Give your answer to two decimal places.

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