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1.2 Atomic structure

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Question 29
(a).

A scientist compares two particles, A and B.

Particle A has 12 protons, 13 neutrons and 10 electrons.

Particle B is a neutral atom with 12 electrons and a mass number of 25.

Calculate the overall charge of particle A.

[1]
(b).

Explain whether particle A could have formed when particle B became an ion.

[3]
Markscheme

1.2 Atomic structure Questions

  1. GCSE
  2. /Chemistry
  3. /1.2 Atomic structure

101 exam-style questions on OCR GCSE Chemistry 1.2 Atomic structure, covering 1.2.1 Development of the atomic model, 1.2.2 The nuclear model and the size of atoms, and 1.2.3 Subatomic particles in atoms and ions. Each one has a worked solution and a mark scheme showing where the marks go.

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