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6.1 Atomic structure and isotopes

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Question 32
H

An ion has 18 electrons and a relative charge of +2. Its nucleus contains 22 neutrons.

Which gives its atomic number and mass number?

[1]
A

Atomic number 20; mass number 42

B

Atomic number 18; mass number 40

C

Atomic number 16; mass number 38

D

Atomic number 20; mass number 40

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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