CourseCourseConceptConcept

CAIE A-Level Physics AS 11.1.4 Isotopes Are Forms of the Same Element with Different Numbers of Neutrons in Questions

Identify isotopes by matching proton numbers for the same element and distinguishing their neutron counts in nuclide symbols, tables and exam data.

Syllabus
2028–2030
Course
Physics 9702
Level
AS

Exam points

  • Identify isotopes as nuclei of the same element with the same proton number but different neutron numbers.
  • Compare isotope compositions by matching proton numbers and distinguishing their neutron counts.

CAIE A-Level Physics AS 11.1.4 Isotopes Are Forms of the Same Element with Different Numbers of Neutrons in Questions question 1

[Maximum number: 1]

Hydrogen and deuterium can be represented by the nuclide symbols 11H{ }_{1}^{1} \mathrm{H} and 12H{ }_{1}^{2} \mathrm{H} respectively.
What is a difference between hydrogen and deuterium?

A

The deuterium atom has twice the number of electrons as the hydrogen atom.

B

The deuterium nucleus has a charge, but the hydrogen nucleus has no charge.

C

The deuterium nucleus has less mass than the hydrogen nucleus.

D

The deuterium nucleus has half the charge per unit mass of the hydrogen nucleus.

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