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1.2 Atomic structure

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Question 26
H

An ion, X2+\mathrm{X^{2+}}X2+, has 36 electrons and 50 neutrons.

What is the mass number of X?

[1]
A

84

B

86

C

88

D

124

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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