Asked in FBISE Chemistry 2023 — Paper 1 2023

Height of peak in mass spectrum shows:

Correct answer: C. Relative abundace of isotopes

  • A. Number of isotopes
  • B. Mass number
  • C. Relative abundace of isotopes
  • D. Number of protons

Explanation

Option c is the correct answer. The height of a peak in a mass spectrum is directly proportional to the relative abundance of ions with that particular mass-to-charge ratio. Higher peaks indicate higher abundance of ions with that mass-to-charge ratio.

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