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CAIE A-Level Physics AS 11.1.3 Nucleon Number and Proton Number Questions

Distinguish proton and nucleon numbers, then calculate neutron counts and particle totals from nuclide notation, isotope data and charged atoms.

Syllabus
2028–2030
Course
Physics 9702
Level
AS

Exam points

  • Distinguish proton number Z from nucleon number A, the total protons plus neutrons.
  • Calculate neutron number as A−Z and use nuclide data to determine particle counts.

CAIE A-Level Physics AS 11.1.3 Nucleon Number and Proton Number Questions question 1

[Maximum number: 1]

The table lists the nucleon number and the proton number of various nuclei. The nuclei are represented by the letters L to T.

Table for Question CAIE A-Level Physics AS 11.1.3 Nucleon Number and Proton Number Questions question 1 — CAIE A-Level Physics AS

Which row in the following table correctly shows three nuclei of the same element, and three nuclei that have the same number of neutrons?

same element

same number

of neutrons

LM N

RPN

MPS

RST

OPQ

MPS

RPN

OPQ

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