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Edexcel A-Level Chemistry AS 2.5 The Term Isotope Questions

Define isotopes as atoms with the same proton number but different neutron numbers, then compare atomic number, mass number and nuclear particle counts from notation or tables.

Syllabus
First assessment 2019
Course
Chemistry YCH11
Level
AS

Exam points

  • Define isotopes as atoms with the same proton number but different neutron numbers.
  • Use isotope notation or tables to compare atomic number, mass number and neutrons.

Edexcel A-Level Chemistry AS 2.5 The Term Isotope Questions question 1

[Maximum number: 1]

This question is about magnesium, magnesium oxide and magnesium sulfate.

A sample of magnesium contains three isotopes and has a relative atomic mass of 24.32.
The table gives the relative abundances of two of these isotopes.

Table for Question Edexcel A-Level Chemistry AS 2.5 The Term Isotope Questions question 1 — Edexcel A-Level Chemistry AS

State one similarity and one difference between these isotopes.

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