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4.1 Atoms and isotopes

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Question 4
F

A neutral atom of lithium contains 3 protons, 4 neutrons and 3 electrons. The atom loses one electron.

a.

Give the number of protons in the lithium ion that is formed.

[1]
b.

Give the charge on the lithium ion that is formed.

[1]
c.

Explain why the atom becomes a positive ion when it loses an electron.

[2]
Markscheme

4.1 Atoms and isotopes Questions

  1. GCSE
  2. /Physics
  3. /4.1 Atoms and isotopes

40 exam-style questions on AQA GCSE Physics 4.1 Atoms and isotopes, covering 4.1.1 The structure of an atom, 4.1.2 Mass number, atomic number and isotopes, and 4.1.3 The development of the model of the atom (common content with chemistry). Each one has a worked solution and a mark scheme showing where the marks go.

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