Edexcel A-Level Chemistry AS 2.4 The Atomic Number and the Mass Number to Determine the Number of Each Type of Subatomic Particle in an Atom or Ion Questions

Practise calculating protons, neutrons and electrons in atoms and ions from isotope notation, charge and particle tables.

Exam points

complete particle tables for isotopes using atomic number, mass number and charge
compare atoms with the same mass number but different proton and neutron counts

[Maximum number: 2]

This question is about copper and its compounds.

A sample of copper contains the isotopes ${ }^{63} \mathrm{Cu}$ and ${ }^{65} \mathrm{Cu}$ .

Complete the table to show the numbers of subatomic particles in the atoms of these two isotopes of copper.

Table for Question Edexcel A-Level Chemistry AS 2.4 The Atomic Number and the Mass Number to Determine the Number of Each Type of Subatomic Particle in an Atom or Ion Questions question 1 — Edexcel A-Level Chemistry AS

One mark for each correct row
Four or five correct scores one mark
Ignore working

(2)

Isotope

Protons

Neutrons

Electrons

${ }^{63} \mathrm{Cu}$

29

34

29

(1)

${ }^{65} \mathrm{Cu}$

29

36

29

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Edexcel A-Level Chemistry AS 2.4 The Atomic Number and the Mass Number to Determine the Number of Each Type of Subatomic Particle in an Atom or Ion Questions question 1