The number of peaks obtained in mass spectrometry shows____________________?
Correct answer: C. Number of isotopes
- A. Relative abundance
- B. Average mass of element
- C. Number of isotopes
- D. Relative isotopic mass
Explanation
In a mass spectrum, isotopes of an element produce separate signals at different mass-to-charge values, so the number of peaks generally indicates the number of isotopes detected. Students may choose relative abundance, but abundance is shown by peak height or intensity, not by the number of peaks.
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About Periodic Properties and Trends
Periodic properties arise from electron configuration and effective nuclear charge, producing trends in atomic and ionic radius, ionization energy, electron affinity, electronegativity, metallic character and reactivity. Comparisons run across periods and down groups, with attention to common exceptions. The topic also relates these trends to the behavior of s-block and p-block elements.
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