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CAIE A-Level Chemistry AS 1.2.3 Isotopes of the Same Element Have the Same Questions

Practise explaining isotope chemical behaviour by linking the same proton number and electron configuration, especially valence electrons, to identical reactions.

Syllabus
2028–2030
Course
Chemistry 9701
Level
AS

Exam points

  • Explain why isotopes of the same element have the same chemical properties because they share the same proton number and electron configuration.

CAIE A-Level Chemistry AS 1.2.3 Isotopes of the Same Element Have the Same Questions question 1

[Maximum number: 1]

Which statements are correct when referring to the two common isotopes of chlorine?
1 The isotopes have different masses.
2 The isotopes have different numbers of nucleons.
3 The isotopes have the same chemical reactions.

A

1, 2 and 3 are correct

B

1 and 2 only are correct

C

2 and 3 only are correct

D

1 only is correct

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