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6.1 Atomic structure and isotopes

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Question 3

The table shows the numbers of particles in an atom of oxygen.

ParticleNumber
Protons8
Neutrons9
Electrons8

Which number is the mass number of this atom?

[1]
A

16

B

17

C

25

D

8

Markscheme

6.1 Atomic structure and isotopes Questions

  1. GCSE
  2. /Physics
  3. /6.1 Atomic structure and isotopes

103 exam-style questions on Edexcel GCSE Physics 6.1 Atomic structure and isotopes, covering 6.1.1 Structure of the atom, 6.1.2 Isotopes: atomic and mass number, 6.1.3 Sub-atomic particles: masses and charges, and 6.1.4 Electron orbits and energy changes. Each one has a worked solution and a mark scheme showing where the marks go.

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