Igcse Model Questions Vol1 2020 Chemistry Question 1

Practice practical question 1 from the 2020 Igcse Model Questions Vol1 Chemistry examination. This question covers Atomic structure, Relative atomic mass, Isotopes .

Igcse Model Questions Vol1 2020 Chemistry Practical
Topics: Atomic structure Relative atomic mass Isotopes
Question 1 IGCSE_MODEL_QUESTIONS_VOL1 • 2020 • CHEMISTRY • practical

A mass‑spectrometer was used to analyse a sample of chlorine gas. The instrument gave the following relative intensity data for the isotopic peaks. | Mass number (u) | Relative intensity (%) | |----------------|------------------------| | 35 | 75.8 | | 37 | 24.2 | Using this information, answer the questions that follow.

Question Parts

( a )
Calculate the relative atomic mass of chlorine to two decimal places.
( b )
State the number of neutrons present in the most abundant isotope of chlorine.
( c )
Explain why the relative atomic mass of chlorine is not a whole number.

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This is Igcse Model Questions Vol1 2020 Chemistry Question 1. It is one of the practical questions from the 2020 Igcse Model Questions Vol1 Chemistry examination.

The question covers Atomic structure, Relative atomic mass, Isotopes .

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